General Motors is now 1 million miles into its fuel cell experiment and company officials say having everyday people drive a test fleet of pollution-free cars has convinced them they are on the right track. The automaker on Friday said it passed the 1 million-miles-driven mark in its fuel cell Chevrolet Equinox vehicles, with about 5,000 people rotating in and out of more than 100 cars over the past 25 months. “They’ll tell you that after the first week, they pretty much forget it’s a fuel cell car,” said GM’s Daniel O’Connell.