Pontiac GTO Concept
Pontiac spent decades producing Firebirds and Trans Ams, leaving the GTO to history books. The market was gone for such a specific muscle car like the original GTO at the time. But the true enthusiasts never forgot the timeless style and performance of the original muscle car (via Ultimate Car Page).
So Pontiac surprised everyone at the 1999 Detroit Auto Show with a fantastic concept called the GTO. It was a modern-looking, aggressive muscle car that drew a lot of attention from the crowd. The GTO Concept was a pure styling exercise but General Motors realized they still had a market niche to fill.