Dogscooter

"If your dog loves to run, if you can't walk him enough, if he pulls your arm off, if you would not want your mother or daughter to walk him, if driving to the dog park each night is difficult/boring/expensive, if the Iditarod grabs your imagination, try the new dog sport: dog scootering. Slip your dog into a sled dog harness, rope him to a scooter, hop on the scooter and let him run. The dog and you become a mini mushing team. You ride the scooter; he runs and pulls. Scooter dogs can run for a few city blocks or for 5 to 20 miles on back country trails. You and the dog are a team."

http://dogscooter.com/