7: 1966 Chevrolet Chevelle SS 396
As 1966 rolled around, the Chevelle was designed and in full swing. But the design of the car wasn’t all that revolutionary when you looked at it. Overall the finished package was less than what consumers were hoping for. The SS 396 had blazing performance out the door, but sadly a lot of things were missing with the rest of the car. The look wasn’t what you’d expect in a performance car of this caliber.

The interior was also a letdown for most of the consumers who were vying for this car. Thus sales were not what you’d expect, and the SS 396 was not the sales success GM had hoped for. Naturally, these cars still hold their value from a consumer standpoint, a good thing for collectors.