Airport car rental fees

On a recent trip to Seattle I found that the airport car rental agency  had tacked on over $100 related to the cost of using a rental agency within a mile of the airport.  If you are in Seattle, take the new rail line and rent your car downtown to save $100.

If you are renting an airport car in San Francisco walk or get a ride to the car rental office on the airport grounds and make sure they know you didn't take the air-rail.  Save $18.

Salt Lake City was another place for saving $100 by using a downtown car rental office, but I had a family member drive me there.