Cars can be a useful tool, when used appropriately.
But not everyone needs to buy and maintain a car, no matter what your television says.
Car ownership takes valuable money out of our pockets and puts them in an industry which is destroying the planet. For people living in urban environments across the USA, car sharing is proving what we always believed, car-ownership is for suckers.
Johnson and her husband, who live in a small Mission District apartment, drive to the grocery store, to pick up friends at the airport and to go hiking. They spend between $30 and $75 a month -- less than insurance used to cost when she owned a car.
"The prices are very low,'' she said. "When I tell people how little we spend, their jaws drop."