Talk about stance! Chopped Trikes were once very common. Even with todays re-interest in vintage choppers, you don't see that many trikes.
It's a small world after all! The very same Bob Wise submitted the two black conept drawings for Street Chopper's (June 1972), Trick Trike contest. My art is on the facing page. I posted this a few years ago which lead to me meeting the good doctor.