6. Pontiac GTO Concept
Pontiac spent decades producing Firebirds and Trans Am, leaving the GTO to the history books. For such a specific muscle car like the original GTO, the market was gone. However, some car enthusiasts never forgot the timeless style and performance of the original muscle car.
So, at the 1999 Detroit Auto Show, Pontiac surprised everybody with a fantastic concept they called the GTO. It was a modern-looking, aggressive muscle car that received a lot of attention from the crowd. And it showed Pontiac many people wanted to see the GTO come back. The GTO Concept was a pure styling exercise, but General Motors realized they had a market niche to fulfill.