When you're talking about exceptionally rare automobiles, many of them are concept cars or prototypes. Both are meant for testing, but what's the difference?

The Concept AMG GT XX features a new motor design, bold styling and high-speed charging capability.

Mercedes just unveiled the new concept AMG GT XX, which can get almost 250 miles of all-electric range in about five minutes of charging.

Summary Chronicles the rise of the American auto industry through the life of Harley Earl, an innovator who introduced the art of automobile styling into the auto-making industry, revolutionizing the ...

Mercedes-AMG's new GT XX concept used axial flux motors for added power, and emits a V8-inspired sound through speakers in the headlamps and other places.

The Mercedes-AMG GT XX Concept's 5 Coolest, Wildest New Technologies From dynamic aero wheels to worms and bacteria—we know they're awesome, just not which ones are making it to production.

The Petersen Automotive Museum in Los Angeles is celebrating the cars and culture of the '80s and '90s with its new 'Totally Awesome!' exhibit.

The Mercedes AMG Concept GT XX is a groundbreaking electric vehicle that showcases the brand’s commitment to pushing the boundaries of performance and technology.

Despite the heavy camouflage, the electric prototype for the production car clearly resembles the Type 00 concept’s design.