Beware of doing business with Bauer's Limousine. I ordered a limo from them -- a top-of-the-line model and instead, they sent a clunker (the lowest model). it was like ordering a rolls royce and getting a 1984 chevy nova held together by duct tape. and afterwards, Rick (the manager there) would not return my calls. he refused to send any sort of refund. He even said he wouldn't apologize. I would highly encourage you not to do business with Bauer's Limousine.
I have used many of the other limo services in SF and they have been great. Every one of them has been better than Bauer's.
They did a bait and switch on me too.
I heard they do a good job for Google. But if you are a small client, beware! They won't care about you.