I go to Berkeley Ca often on weekends. As a kid we'd go to SF too because why not. But now it's another $8+ for the bridge, and even if you find street parking it's another $2 an hour anywhere you might want to jump out for a few minutes. Basically it's an extra $20 to get the opportunity to spend your money in SF. So now I haven't been to my favorite coffee shop or pizza place in years. Oh well.
Why not take the train...?