Picture yourself in a sterile cabin sitting atop four wheels. The only sound you hear is the soft hum of an electric engine. There is not much there except for four seats. The dashboard is bare, and it only has a large screen showing the remainder of your trip on a map — there is no steering wheel. The tinted windows block out the sun; still, you are able to see outside. You can observe a swarm of cars moving in a peloton through a downtown area—at a frightening speed—breaking their even spacing to cross an intersection, where a pileup is avoided by only a few millimeters, as another swarm of cars crosses the intersection perpendicular to you.