In March 2010, Tammy Trahan’s 1993 Jeep Cherokee broke down on one of the New Hampshire back roads that made up her 90-mile daily commute. “I was in tears,” says Tammy, “I wanted to drive into the river.” As a single mom, the car was her lifeline, taking her to the job that kept her and her family barely afloat. But the car was also dragging her down. Because a bad divorce had left her with terrible credit, she’d paid such high interest rates that the car with a $9000 sticker price when she bought it seven years earlier ended up costing her $20,000 in payments.