On the subject of so called "disability" I watched a YouTube video about New York cycle couriers. There was one rider there who delivers 20 or 30 documents per day. Which is real good going, believe me! He has only one leg. He attaches his crutches along the crossbar for when he has to get off the bike and make a delivery. This guy was an inspiration to me. If you search YouTube for "cycle couriers" you"ll surely find it.