GM has crafted some radically cool concept cars that should have made it to production, but unfortunately fell short.

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

Some even influence the design language of future production models. Here are 10 of GM's finest concept cars, many of which you may never have laid eyes on before. All the concept cars here have ...

Concept cars are meant to show off new design ideas and technology. Most were never meant to go to market, but here are some ...

Cadillac, the luxury-vehicle division of General Motors, unveiled a new concept car at CES on Wednesday. Source: Cadillac The car, InnerSpace, is part of its Cadillac Halo Concept Portfolio.

General Motors can trace its roots all the way back ... In the early 2000s, Cadillac revealed a concept car that was meant to be the brand's halo car. What's the best way to create a halo car?

Like the Ford, and like NASCAR's unbranded prototype, the three-motor setup makes the Blazer EV.R all-wheel drive. Those ...

While purely a concept at this stage, GM says a production version would likely carry a price tag of around $25,000. That would put the sports car in perfect fighting range with the likes of the ...

High style concept cars have retuned to auto show turntables ... On the lower fascia an Ultra Cruise, previewing future models with General Motors's latest hands-free driver assist system.