For anyone who finds boxing too subtle a sport, there's demolition derby. Its appeal is simple: Cars smash. That's it. While the sport was huge in the 1970s, it's getting harder to find. But Smash It Derby, a London, Ohio, company organizes derbies all over the state, often at local fair grounds. Amateur drivers enter their cars, trucks, even lawnmowers in hopes of taking home a purse so modest, it's hardly going to cover the amount of body work they're most likely going to need.