I'm 90% sure I'm going and I can give rides. My car is one of those sports car convertible types that's technically a 2+2, but the back seats are EXTREMELY small and quite uncomfortable for anyone even marginally tall. I'm 5'6" and I wouldn't love to be stuck back there for an extended amount of time. Then again, it's not that long of a trip and some of you might be more tolerant than me of such things.
So, basically, I can take 1 normal person + 2 small/flexible people. Let me know. If it matters I live in the Mission, but SF isn't too big, so I can probably meet people wherever, or if they want to take MUNI/BART to a central location that would be cool too.