That Dog Thinks It's a Car!

Our new dog is learning to run alongside me while I bike (she's attached to the bike by a bungie cord) and while she trots along at a pretty good clip, I think the dog I saw today from my car window would be an even better biking partner: this dog had no back legs and instead of them, she had a cart with two wheels which the rear portion of her body rested upon . . . so if she were attached to the bike, she could just pull up her front legs and basically become a sidecar.