By Vivek Wadhwa ~ It is a warm autumn morning, and I am walking through downtown Mountain View, Calif., when I see it. A small vehicle that looks like a cross between a golf cart and a Jetson-esque, bubble-topped spaceship glides to a stop at an intersection. Someone is sitting in the passenger seat, but no one seems to be sitting in the driver seat. How odd, I think. And then I realize I am looking at a Google car.