We've talked about a lot of powerful machines in our previous blog posts, from motocross to motorcycle ice racing to... lawn mowers?

Believe it or not, lawn mower racing is growing in popularity every year. Some people call it the "poor man's NASCAR", but most just call it fun. These racing machines aren't your average mowers, either: the blades are removed for safety, and everything from engine to body is customized for speed. Some racers will spend over $10,000 to get their machines ready; fortunately, as with NASCAR, many companies are willing to sponsor racers to help get them on the track.

Photographer Jennifer Boomer has been following lawn mower racers with her camera; you can see her photos here. Do you race? Tell us all about it in our comments section!