Car sharing programs are becoming a good option for those who want to avoid car ownership.

The "driving boom is over," or so says a new study of American attitudes toward the automobile.

After decades of adding more cars to their household fleet while moving further and further out into the suburbs, Americans are waiting longer to get licensed, driving less and increasingly turning to alternatives such as mass transit or car-sharing programs, according to a new study by the U.S. Public Research Interest Group, or PIRG.