At the Consumer Electronics Show in Las Vegas, GM presented a Chevrolet Tahoe, driverless car designed to navigate it using radar, laser and camera systems.
Developed by GM, supplier Continental and Carnegie Mellon University, the high-tech Tahoe won a contest last year held by the US Defense Department.
US Defense required vehicles to negotiate a 60-mile city course without human intervention, to obey traffic laws, merge into moving traffic, avoid obstacles and negociate intersections.
Other carmakers were part of the same project and had different control methods; for example, Honda only used cameras on its autonomous test cars.
One of the intriguing questions faced by development teams was how to deal with unexpected objects in the path of the vehicle
