Originally Posted by
returnoftheyeti
Don't drive it. Don't park at a restaurant and get validated parking. If you are staying at the airport, drive to the Millbrae BART, park there, take BART to the Powell Station.
Get a day pass from Muni:
http://www.sfmta.com/cms/mfares/passports.htm
Take the Cable Care to Pier 39 and go from there.....
That's nearly $100 on public transit costs. I think this OP can do a lot better by driving and parking.