With its prototype series of Astro concept cars, GM showed drivers a possible vision of a future that never fully arrived.

In fact, Chevy has been testing it since the 1960's with its series of Chevrolet Experimental Research Vehicles. However, these prototypes remained concept cars because of issues with engine ...

GM and AMC all built Stirling cars. There is no one (to my knowledge) working on new Stirling Engine vehicles today. Still, the potential is there, especially in a hybrid engine where the ...

Originally published in Car and Driver magazine in November 1962 ... the suspension expert who served as a consultant on many GM experimental programs, was engaged on "Project Opel," the open ...