"This is the most incredible challenge I've ever faced," Johnson told TheWrap.com. "I wanted to go up against the fastest in the world and test myself, and this was it!"
We have serious doubts Johnson could beat Bolt in the 40, but we know he's not toasting a cheetah. According to people who knows these things, the cheetah can accelerate from 0 to 60 miles per hour in three seconds.
We haven't seen speed like that on a football field since Bo Jackson in "Tecmo Bowl."