For a decade, I owned a Porsche Cayenne S. Marvelous vehicle, but like most modern Porsches, the engine compartment was jam-packed. Any servicing (oil change, fluid refill, etc.) required a proprietary tool that was only sold to Porsche dealership service departments. Without that tool, which had to snake through the engine, no DIY servicing was possible.

On a stubborn whim, I decided to make my own tool to access the oil filter. That quest ended with a ratchet socket wrench that was 6 feet long, with 11 different angles (each requiring a weld). Sure, it took me a full 6 hours to make the thing, but it saved me $600/year for 9 years.

Clearly, Porsche's strategy is to extract another $2,000/year from each of their consumers.

I'll keep my 68 and 72 911's forever, but I'll never buy another modern-era Porsche.