officers with hacking into the computers of the democratic presidential candidate hillary clinton and her party. ina in a moment on bbc news, we will have news watch, but first, he is click. —— here is. file footage: the seconds wound down before the start, 24 down before the start, 2a drivers stamped ha rd 2a drivers stamped hard on the throttle. formula i has been at the cutting edge of technology and design since its creation in 1946. welcome to the pit.

every year, teams compete fiercely to outdo each other in aerodynamics, data communications and materials — all with one aim — to make their cars go really, really fast. and they do a really good job of making them that, as we are finding out here at the austrian grand prix. lewis hamilton's ride. what's even more impressive is that this whole show is that this whole show is permanently on the road, with car, teams, engineers, and scientists moving from country to country and track to track. now, these are the most expensive motorhomes i've ever seen. each one of these is a lorry, and theyjust drive to the next formula i, stick them together,

zip, zip, zip, and that's ferrari's office for the length of the race. and ahead of the race here in spielberg, austria, the cars are being prepped, tweaked, and tested round the clock. mercedes are the current world champions and like every other team here, they spend millions on their car and developing the technology that will hopefully win them the race. but what you see at any grand prix is just the tip of the iceberg, it takes hundreds of people to develop that technology. so we sent lara lewington to mercedes hq, to find out what really goes into winning a race. away from the track, the people, the preparation, the planning, and the precision are pivotal. hi, i'm lara lewington from the bbc. hello. can ijust put security stickers on your phone? of course. for the cameras. no problem. thank you. so we're allowed to film here, but i mustn't take any pictures on my phone. there's clearly a lot at stake here, so it's no surprise that formula i is notoriously secretive, but today, we've got some behind—the—scenes access. this business is big

bucks and millimetres and milliseconds matter. this is known as chassis number five, last year's winning car. in fact, it hasn't even been cleaned since its last race in abu dhabi. but the thing that is most striking standing here next to it is the amount of detail there is everywhere throughout the car, and after each race, if there's something they're not happy with, it can be perfected. well, this was a winning car last year, so clearly it's been very successful, but you're obviously not happy with it because you're working on a new one, so what do you think needs to be improved? we're never happy with it, as you say, this is lewis's car from last year. it was the first car we made on the back of a really big regulation change. we worked really hard on all those little small bits you see around the car, which is all the aerodynamic bits and pieces. it seems to be made up of lots of little, small metal bits? yeah, every little bit has a job.

and we put it into the wind tunnel, each one is all about optimising the airflow around the car. what we're not happy with a little bit is because we focused so much on that, we now need to do a lot on the packaging internally, to make it much tighter. the tighter you can get it, again, the better you can get the aerodynamics around the car. on top of that as well, we think we can do improvements around the cooling. those big black ducts in the side is where the air goes in to cool the engine. we think we can do some improvements around that area as well for next year. well, there's so much money at stake here. how much does it cost to create a car like this, from the beginning of the process all the way through? what sort of figure would you put on that? well, i can't tell you the exact figure, but i can tell you it's many, many million. are we talking tens of millions? tens of millions. tens of millions? yeah, yeah. over 50 million? close. crikey, wouldn't want to pay the insurance premium on that. the operation here goes way beyond the car itself, though. welcome to the race support room.

meanwhile, this lot are busy practising at speed. over 250 of these trials take place ahead of the season. they make it look easy. but inevitably, it's not, as i can tell you first—hand. oh no. so it's meant to be so quick, but i clearly wasn't. meanwhile, spencer's already living life in the fast lane. thank you, lara, and by the way, this is how you really do it. this year, mercedes has got its pitstop down to an incredible 1.85 seconds, now that's quicker than it takes to say "1.85 seconds". it's a finely tuned operation, that the engineers practice over

and over in the days before each race. it's a bit of a ballet and the ergonomics is quite important because there's 20 odd people around the car trying to do a job in two seconds and, you know, it's — if you start banging into people, then you're losing half a second or a second, and then the strategists can't get their numbers right, and then you don't get the position you need. the human element to this ultrafast manoeuvre is accompanied by technology, individually developed by each team. even the hydraulically powered wheel guns are a closely guarded secret. and i hear they're quite expensive? they are expensive and they have a life, because they run an awful lot of pressure. so we're changing the internals a great deal. do i hear about £30,000 each? i wouldn't know the exact cost, but that sounds quite low to me. (laughter) right, we're going into mercedes's garage now. keeping the pit crew safe is of utmost importance.

these lights, for example, let the crew know if the cars have become electrified, stopping them from getting more than a nasty shock. and then there's what goes into the cars or, more specifically, what comes out of the cars, which is monitored by trackside labs and high—end scientific equipment. between every session, the cars are given the equivalent of a blood test, the oil and the fuel is taken to see if it's contaminated, and that might give you a clue as to the state of the engine, and that is done in the fuel lab. the oil is put into a spectrometer, which tests for different metals in the fluid. the amount of a specific metal present can reveal if a particular part of the engine is degrading too quickly. and actually, it looks like the most

stressful job today is and actually, it looks like the most stressfuljob today is being done by jen. yes, spencer, iam here at this hurricane simulator in cologne, germany. it was built to see how its most popular models compete against other models on earth from high altitude, humidity, snow and winds and driving rain. —— gale force winds. they are capable of testing up winds. they are capable of testing up to ten cars at once. i conduct the tests. i have the solar simulation for temperature and fought airspeed, which is measured to the pressure from the nozzle. first we going to see what it might be like to drive your car in a

ra i nfo rest. be like to drive your car in a rainforest. —— first, we are going to see. it gets up to 55 degrees in this room and the humidity can go to 95%. this is one of four temperature controlled test chambers, complete with birdsong and fake palm trees to simulate a tropical environment. it is taking there, that is so hot. from extreme heat the extreme cold. that is the snow room. the doors are heavy. it is about —17 here right now, but the temperature can be set to go as low as minus 30. this is impressive. it is testing the weight of the snow on the car, because this is actually a realistic situation in some parts of the world, to get a big snowballed on the... next, we are going to see how cars are tested in hurricane conditions. we have climactic in tunnels, so we always control the wind speed to simulate that the car is moving on the roads, we move the wind. so it is actually

156 kilometres an hour winds up a snack at the moment, it is testing the automatic function of the windscreen wipers, so whether or not there is an equal amount of time going between each blade. the talent is not just test the going between each blade. the talent is notjust test the rain and wind but also the effect the sun has on the car in extreme conditions. it is set up with 28 spotlights with 4000 watts bulbs to mimic sunlight. the solar system is always interesting when it comes to heat loads that infect our powertrain and that infect our powertrain and that infect the performance. it really looks like being outside in bright sunlight. pretty much brightens my day every time i can use it. the ability to test cars at high altitude, while also simulating challenging weather conditions, is the unique factor of the test centre. they can reach heights of 1500 metres, as high as everest base camp. engineers have the finish working in this time. our vehicles

are sold in markets globally, this is another tune of more than 1000 metres. we can also simulate you pulling a trailer up the hill, on different altitude levels, so testing the powertrain, regarding what is happening in terms of temperature, how is that developing, and making sure that the cars are safe. we have seen everything here, but i for one am looking forward to getting back to some nice british weather. that wasjen, and that's it from the austrian grand prix. this is the short version of click though, so we have much more in the full version, which you can see on iplayer right now, and there are tons of photos on twitter too. see you soon. hello and welcome to newswatch with me, samira ahmed.

coming up: high drama in westminster as two cabinet ministers resign, but did personalities trump substance in the bbc‘s coverage? did the bbc really need to fly sophie rayworth to moscow to present news bulletins on the night of the world cup semi—final? first, president trump's much—anticipated trip to the uk is in full swing and it's proving predictably controversial. for some viewers, too much of the buildup coverage focused on the protests planned for the president, such as the row over the trump baby blimp to be flown over central london. chris steel was one of them, asking: and after air force one landed at stansted airport and the demonstrations started, the complaints continued along similar lines, with dawn rosher asking: gaynor yeates agreed.

president trump arrived in a country he had described just before leaving washington as being in turmoil, a reference presumably to those two cabinet resignations within 24 hours, reported here on monday's news at six. the foreign secretary went this afternoon. he disagreed with the prime minister's latest brexit plan. and earlier, the brexit secratary said he was resigning as he didn't believe in theresa may's exit strategy. big political news no doubt, but two newswatch viewers objected to the coverage, recording

videos to explain why. here's francis fa ruja and first, john gillifer. when the disagreement and subsequent resignation over brexit were announced, the immediate reaction of those covering seemed to be, "what does this mean for theresa may's future as prime minister?" surely what's important is how it affects the brexit process, the infighting within and between our parties should surely be secondary. in general, the coverage of the brexit process seems to spend far too much time concentrating on the interaction between our politicians at the expense of giving any detail on what's been decided. unfortunately, what is been portrayed in the frenzied news media, including the much respected bbc bews broadcast, is only the political high drama of this instead of educating the british public of what it means to remain or to exit the customs union. this is not explained and what is focused

on are the personalities, ie boris johnson versus theresa may and the possibility of ousting the british prime minister. how can the public make an informed decision or conduct a genuine