Based on the 1975 coin-op of the same name, Stunt Cycle by Atari was released back in 1977 and is easily one of the most intriguing and, dare I say, cooler Atari consoles ever. It was, after all, designed to take advantage of the popularity of Evel Knievel's stunts and impress with its built-in motocross controller. The console came with a ton of options, several modes and difficulty levels and without a cartridge slot.
You can grab a Stunt Cycle via this pretty impressive Stunt Cycle eBay auction. The console comes complete in its box with a manual and all necessary bits and leads. Seller ships worldwide.