Sounds to me like some of us would have had a hard time figuring out the first 5 speed gearboxes Porsche offered with it's (by today's standard) unorthodox shifting pattern.

As for my doofus moment, I didn't figure out that Porsche was not using a maintenance free battery until I had had my car for close to a year. I never gave the battery much thought after coming out of years of driving BMW's which have used maintenance free batteries for years and figured Porsche with its (at the time at least) two year/20,000 mile service intervals would never install a component that didn't have a chance of going two years before it needed servicing. But then again, I should have RTFM!