Gee, traveltoomuch, isn't San Jose one of the few airports where you DON'T have to get a shuttle bus for major on-airport rent-a-cars? One reason I like San Jose is, you can just run out to the car, jump in and be on your way in about 90 seconds.
What I really don't like about rent-a-car shuttles is delayed, dawdling returns... you're late, you're trying to catch a flight, and the driver hangs around on the sidewalk finishing a butt, then wanders the airport as if he were showing the bus to his friends.