how long you're gonna be here and when?
I can tell you which cars shows are coming up etc.
SF is a big place, plenty to do. depends on if you want to be touristy or not.
The Wharf/Peir 39/Alcatraz/trollies are all cool, but pricey and "touristy" Theres Haight street, Mission district, and even the castro, if you want a "unique" experience of shopping and people watching. If you are sporty there are kayak trips in the bay, rollerblading in Golden Gate Park, Kiteflying roller blading at Ocean Beach. Dingers right all the strip clubs are in North Beach, most on Broadway.
Pm or reply to this thread. Let me know the dates. I think theres still a car show every weekend till the end of november. I can give you more specifics if needed!