Chevrolet Corvette C4
The values for the C4 are almost nonexistent and the car was weighed down by smog and emissions regulations at the time. But the C4 had some special editions that cannot be ignored. The car also introduced the digital dashboard and the bulletproof LT1 engine (via Autolist).
The C4 Corvette was one of the most underrated and best cars GM ever built. Sure, the styling was a bit ugly and the build quality was underwhelming, but the fact that it’s a Corvette should satisfy many GM fans.