The day after we bought it, I drove it to work to show it off to my friends. On the way home I was reminded of the fact that I don't commute by bike and train for idealistic reasons alone--traffic sucks! Since then I've been been back on the bike and CalTrain like usual. It's also more fun to meet up with my family after work that way--if I come by car, I have to drive it home by myself.
Our previous "unenlightened tranport" was a minivan, which had the advantage that when I meet up with my familty somewhere, it was easy to load up a bike. I've been keeping a bike rack in the truck of the new car, but it takes up a lot of room that really needs to be used for groceries and ice skates. I guess I'll be shopping for a bike rack that compacts better (and hopefully goes on more quickly).