" A new study finds that commuters with access to free public transportation don’t drive any less — but they do take more leisure and shopping trips than those who have to pay a fare, which could help provide local economies with the cash they need to provide more social services." The economic concept of induced demand (i.e., "build it and they will come") is fully illustrated here. And although increased access to public transit did not reduce miles-driven, it did increase revenue to local small businesses!
Turning Over a New Leaf