Pontiac G8
The Pontiac G8 was the final new Pontiac model that was ever released. The G8 had a powerful V8 engine that was one of the best from GM. There was a heavy advertising campaign that surrounded the G8, but shortly after it was released, GM filed for bankruptcy, and the Pontiac brand was discontinued (via Readers Digest).
The Pontiac G8 was a tragic case of a great car that was released too little too late. The styling and the performance of the G8 were unlike anything else that was on the market. But consumer interest had shifted away from the V8-powered sports sedans, and the G8 was the last of its kind.