I guess I'm not that surprised. On the rare occassions I go to the LBS, there's almost always somebody there getting a flat fixed. I'll fix virtually anything on my bike but on my car there are only two things I'll do: put gas in it and replace the windshield washer fluid. I've never changed oil, checked dipsticks, checked tire air pressure, etc. I pay somebody to do it.

My regular riding buddy (who is female) knows more about cars then I knew there was to know about cars. If she gets a flat while riding, she could fix it herself, but if I'm around, she gets me to do it. She pays somebody to do her yearly maintenance on her bike.

She's into cars, I'm into bikes, and I think it's safe to say that neither of us are in the least bit interested in learning how to fix the other one.