The Pontiac GTO is widely recognized as the genesis of the American muscle car golden age, and now, we're taking a look at these classic GTO concept sketches.

Best of all, Jag never dithered too far away from the original design. The concept car had taut lines ... heads over to his drawing board, and starts drawing lines under the inspiration of ...

something that looks really cool or introduces some novel design concepts, but which would never be practical on the road. Sometimes, a concept car is kind of a rough sketch for an eventual ...

The criteria are that the car must have a manual gearbox, be made between 1959 and 1976, preferably European, hopefully a convertible and cost 15,000-25,000 Canadian dollars ($12,525-$20,870).