Robo-slick EN-v can turn on a dime

GM's all-electric EN-v concept car isn't a robot, but it sure looks the part. The compact two-seater, shown for the first time in the U.S., incorporates Segway-like balancing technology.

It also has networking capabilities so it can autonomously drive in groups at highway speeds. That's meant to alleviate massive road congestion in ultracrowded cities of the future, according to GM.