The Sport of Outhouse Racing

Place your bets, gentlemen. Who will win this time? Will it be the Butt Hut 2 or the Big E?
Behold the glorious sport of outhouse racing. Conconully, Washington holds this annual event of athletic and engineering prowess. Here are the official rules for participating vehicles:

Constructed of wood or wood by-products
Mounted on two non-metallic skis
At least 3-sided with a full roof
At least 5' high, including roof peak
At least 2 1/2' by 2 1/2' square
Without motor or steering devices
Equipped with a toilet seat and toilet paper on a hanger
Inspected by race officials prior to racing.

There are several divisions in the race: male, female, teens, families and seniors. There's also an extreme division which features obstacles on the course. Of if you want a serious challenge, enter the bucket division. The pusher must wear a bucket on his/her head while the pilot provides verbal directions.
You can see more photos of the race at Roadtrippers.