Trim Stab - I play golf frequently with people who would qualify for a blue badge. They cannot walk far without pain or discomfort nor could they do so carrying shopping. They use a buggy to get them around the course and only use their undercarriage to play their shots. They could be couch potatoes and stay home but are prepared to suffer a little to stay as active as possible - I hope in your old age you are treated fairly as Wibble has been now.