AdvertisementHitting The Road Without A DriverAugust 19, 2013Brian NaylorfacebookEmailCarnegie Mellon's autonomous car, developed with General Motors, is by all appearances a normal Cadillac SRX crossover — except for the big red button in the middle of the dashboard. In an emergency, the button allows the car to be switched immediately back to standard driving mode. (GM-Carnegie Mellon Autonomous Driving Collaborative Research Lab)