(honks horn) (cars by gary numan plays) in the us right now, road vehicles contribute to 20% of emissions. but our environment and sanity will be severely tested with predictions of an extra one billion cars worldwide by 2040. ♪ here in my car ♪ ♪ i feel safest of all ♪ ♪ i can lock all my doors... ♪ a possible solution could be replacing car ownership with on-demand driverless vehicles. the same way that we went from owning dvds or cds or records or whatever, to having all of those on demand - essentially netflix and so on - the same thing is going to happen with transportation. damon: i wasn't sure i'd trust a driverless car with my daughter, so i subjected this prototype to the surprise pedestrian test. ah! yes! robots - 1, human - 0. the next test was a little more challenging. traffic. when i push this button, this car will be driving itself. and, um, wish me luck. (laughs) right. so, this is my first experience in a driverless vehicle, and, uh... ..i'm a little bit nervous because that wheel is turning by itself. siri, please look after me. so, yeah, you can see that's our car track