As someone who basically ruined my parents' old riding mower by building an off-road course for it, then doing time trials, I love seeing the crazy contraptions that people make out of riding mowers. This one is the first twin engine model I've seen, and it looks actually pretty well made. Plus, it has horns. Not the noisy kind, more the Pamplona kind. Of course I found it using my favorite CL search term, "invested." And in this case it seems like this guy is way underestimating the time or money invested sunk into this thing.