I need help? Best way to get around in the 'Bay Area'?

So I'm at the Radisson in Brisbane until Sunday, I want to rent a car, but I'm only 21...so that's out of the question. I wanted to try and get a zip-car, but apparently there is a 1-3 day waiting period..so that's ruled out. I need to get to Daly City, Burlingame, the Hillsdale Mall and Downtown SF today. Any suggestions besides BART? -no im not too good for Public Trans, I'm just pressed for tim -Also my girlfriend and I have to split up, and I dont want her to go by herself All contributions are greatly appreciated?