There are many ways to raise awareness for prostate cancer. John Stephenson chose an interesting path. On April 30, the 50-year-old martial arts expert and former bare-knuckle fighter from Halifax, West Yorkshire, hauled a two-ton French police car 131 feet down a residential street using a tow rope attached to his penis. While on fire. In front of baffled neighbors. For charity. Stephenson, a painter and decorator and father of three, has previ…