Back in the late 1980s, Oldsmobile tried to shake off their geriatric image with the "Not your father's Oldsmobile" ad campaign. It did not work. But around the same time, they put out a futuristic concept car that looked like an Olds your great-grandkids would drive someday.
GM's Quad Four was such an orders-of-magnitude improvement over the Early Industrial Revolution technology of the creaky Iron Duke that it seemed impossible to believe that The General could have been behind it. Drop it in the Cutlass Ciera!
Concept cars aren't just a chance for automakers to show us where they're going. In bolder times, they've been a platform for showing where they think the whole world is headed.