The nation can save a lot of gas if the number of single occupant car trips goes down. Commuting to work via public transit is much more efficient fuelwise than driving by yourself. The trouble is, in many or possible most cities and towns in the United States, public transit is not cheap and available. That means even though on a national level public transit saves on fuel, for individuals it can be expensive and inconvenient. A realignment of policy related to public transit could go a long way to helping the United States reduce its need for crude oil.