My step-dad always bungie-cords a bike to his combine or swather so he can ride back to his house when he leaves the implements in the field at night. He also keeps a bike at mom's house and will occasionally go for a ride around the city on it. I used to think he was a bit strange for doing that. When I started riding a lot last summer he was really supportive and he has always said that he'll come get me if I ever can't get home. Hopefully this summer we'll go for a ride together.