[url=http://www.mythbusterstheexhibition.com/science-content/dodge-a-bullet/]Click here.[/url] Mythbusters did a similar test. At 500 feet, you would need to be able to react twice as fast as the record holder fastest human. Usain Bolt. At 100 feet, you would only need to be 10x as fast as the world record holder. Which is, guess what. Only about as fast as a sports car. Not 2800x the speed of a sports car. Because a human can accelerate their body almost instantly, where as a car can't.