An angel appeared in the form of a homeless man for one young woman after she ran out of gas on a dark Philadelphia highway. 27-year-old Kate McClure was driving late one night earlier this month when she felt her car start to chug. That dreaded chug. The out-of-gas sputter. She made it to the side of an offramp and called her boyfriend who said he would come rescue her. He was an hour away. Meanwhile, a homeless man walked