I can imagine this too! But when you look at how you imagine driverless cars to be, you might want to temper your imagination with how driverless cars actually

I can imagine this too! But when you look at how you imagine driverless cars to be, you might want to temper your imagination with how driverless cars actually behave, such as the Tesla running into a trailer because it was too high off the ground for its ultrasound sensors to detect. http://www.theverge.com/2016/5/11/11656496/tesla-model-s-autonomous-summon-mode-crash http://www.theverge.com/2016/5/11/11656496/tesla-model-s-aut... (Note that this is not the famous case of the Tesla being unable to detect a white semi against a bright sky, it's a low speed no-injuries collision). Obviously, Tesla is not the be-all and end-all of driverless cars. But when you're dealing with sensors combined with AI where each is in many ways less capable than the human eye, with different failure modes, it gets expensive and difficult to design really good fields of vision.