A Twin Cities family thought they were meeting a man to buy a car, but they ended up trapped in their own vehicle, held at gunpoint and robbed. The family, who asked to remain anonymous, answered an ad for a Toyota Camry posted on Craigslist. The couple took their two-year-old and went to meet their contact at 8:30 p.m .Thursday on the 200 block of Birmingham Street on St. Paul's east side. The victim walked up to the man to make the transaction. He said, "He put a gun to my head and said you see what I'm working with."...