CAN A DAUGHTER SAVE HER FATHER-AND SAVE THE DAY? Thomas "Big Mac" MacDonald lost everything in the divorce-his home, his National Football League pension, and his dignity-everything but his prized, classic, VW van. It would be enough to drive anyone to drink, but that's only the half of it. The "residents" of the beach park where Thomas and dozens of other homeless San Diegans sleep in their cars are strangely disappearing at a rapid rate. With the...