Well, I'm still here, and it looks like I will be until sometime tomorrow. The one car shop open on Sundays checked the battery, alternator and whatnot, said they were all fine and that there's probably something going on in the fuel system or ignition. But they aren't able to do that kind of work there, so I have to wait until tomorrow to take it to someone else. Grr. Luckily, as I said, I'm not working tomorrow. So hopefully it will get fixed quickly and I can just drive home. If it's going to take a while though, I'll have to find my way home on BART and CalTrain, bike to work for a few days, and get back here when I can. This is all very frustrating.