Early concept: Prowler, 1993
The Prowler is one of the very few examples where a car debuts as an outlandish concept, then hits the streets with relatively few changes. Nearly 12,000 were made in its five years of production, before it faded away into the annals of automotive history.
Early concept: Volt concept, 2007
The Volt concept, when it debuted nearly a decade ago, was among the very first plug-in hybrid concepts shown at one of the major auto shows. Originally a response to the Tesla Roadster, its production version didn’t quite share the same chiseled good looks.