alasdair: this car might look like it's moving on its own, but the secret behind it is a team of driverserlin. the idea behind vay is that in a city, you won't need to own a car — simply order one to be delivered to you whenever you need it. with vay app, then, the car is being remotely driven by the teledriver to the customer, so the customer doesn't need to search for the car. just get into the car on the driver's seat, drive themselves to the destination and, at the destination, theyjust get out without the need to search for parking lot, etc. theyjust get out because the teledriver can then take over control until it drives the vehicle to the next customers. that took us about 30 minutes to get here. this is a telestation, where they drive the cars as they move all over the city of berlin. and in a television first, they're going to let me have a shot. alina is one of the drivers. she's moving a car around the streets of berlin, controlled from here. as i prepare to take over the wheel, i can't help wondering if it's easy to forget you're in control of a car. it looks just like a nor

i'm alasdair.re to design a space to do a show like this, it would look nothing like this. it's too narrow. it's on a hill. there's no straight lines anywhere. it's really quite a tricky space to work with. from our point of view, it's very difficult for us to put a loudspeaker system somewhere that isn't in someone's view. we do a lot of olympic opening ceremonies, that sort of thing. we deliberately design the show so that there's a technical area, a zone where there's no creative activity, and it's out of the view of the audience, where we can place loads of technology that doesn't get in anyone's way. we don't have that option here. of course, instruments like the pipes and others are really loud, but there's still lots of microphones and amplification and things. you're right, pipes are loud, but this is a big space and we're outdoors. so the sound of the pipes, even when there's 100 of them, can need reinforcement. that's not difficult to do. it becomes difficult when that sound source is mov

it is a true spectacle, and alasdair keane has been to the show.d, it is bright, and there is a lot of tartan. this is the royal edinburgh military tattoo. they have been holding it here on the castle esplanade since 1950, and this year's esplanade since 1950, and this yea r�*s tattoo involves a hundred performers, including bands from across the globe. the theme is stories. tonight's show is under way, but i'm not herejust enjoying show is under way, but i'm not here just enjoying myself. earlier i went behind the scenes. there are nearly 700 crew and technical experts working backstage, and another step for you — 35 miles of cabling. —— another stat. step for you — 35 miles of cabling. —— anotherstat. up here is the control room, where the tech dish make the magic happen. —— technicians make the magic happen. iii happen. -- technicians make the magic happen-— magic happen. if you were to desi . n magic happen. if you were to desirn a magic happen. if you were to design a space _ magic happen. if you were to design a space to _ magic happen. if yo

i'm alasdair. we don't have that option here. of course, instruments like the pipes and others are really loud, but there's still lots of microphones and amplification and things. you're right, pipes are loud, but this is a big space and we're outdoors. so the sound of the pipes, even when there's 100 of them, can need reinforcement. that's not difficult to do. it becomes difficult when that sound source is moving with respect to the audience. and to amplify that, the amplification has to be done in a way that matches the time domain or the sound arrival from the acoustic source. the reinforced source has to follow. from our point of view, we need to know within about a ten millisecond error where each microphone is going to be, and we need to be able to track that. now, there is a tracking system that we're using, so whenever we put a microphone on somebody, we also put a tag on that person, and then we can track them in three dimensions. we're not using that live during the show so, instead, we u