I dig this sweet bike hack. You’d want to be pretty confident in the tubing stability and mounting hardware before offering a ride to anyone you like. It is acceptable to require that they wear tube socks.
John Edgar Park likes to make things and tell people about it. He works in CG animation at DisneyToon Studios and writes for Make, Boing Boing, and other places online and in print. You can find him at jpixl.net and twitter @johnedgarpark — if you like that sort of thing.