Auto payment defaults doubled last year and are expected to get worse. It is another financial meltdown waiting to happen similar to the crisis in the home mortgage industry, according to one consumer group. A CBS 5 ConsumerWatch investigation has found consumers locked into cars they cannot afford. According to Power Information Network, 1.85 of the 9.6 million customers in 2006 who leased or financed a new car were subprime borrowers or consumers with weak credit. Vivian Snyder has strong credit and is not classified as subprime, but she is one of many consumers who can't afford the car she...