Top 10 Concept Cars by GMC

10 awesome cars that General Motors developed, but never mass produced

The idea behind the Autonomy was, as put by CEO Rick Wagoner ‘What if we were inventing the automobile today rather than a century ago? What might we do differently?’. The GM Autonomy, developed in 2002, was the answer. The vehicle was built around a fuel-cell propulsion system that would make the car more electronic than mechanical, allowing for ease of manufacturing and maintaining, as well as usage of renewable energy.