The designer of the Shelby GT was a real betting man. You'll love the story of his most famous bet.
Carroll Shelby was an American racing driver, as well as an automotive designer and entrepreneur. He was involved with the AC Cobra and the Mustang-based performance cars for Ford Motor Company.
He eventually created his own company, which currently sells modified Ford vehicles. He was proud of his cars and his driving skills, and he liked to showed off his potential as much as he could.
When people asked him how fast his car could go, he supposedly answered them by placing a $100 bill in the glove box of a Shelby 427 Cobra. If you could reach forward and grab it under acceleration, you could keep it.