Hey Ben,
A little OT, but be careful what you show up driving when you go to do someone's tax return. A fancy car, even an old one, will draw comments. People don't want to think you are "doing better" than them.
Long time ago, I went to meet a prospective client and need a car so I borrowed a Datsun 300Z from a girl in the office. First thing the guy said was "Fancy Car"

In the end, I never did business with him. My former partner used to raise eyebrows when he went to visit clients in a red 450slc.
I can sympathize with most of the comments in this thread and feel right at home. My 300CE cost me a small fortune this year. Easily what it's worth was sunk into it this year. Some dealer work, some indie work.

Got to drive in a new C350 and E350 for a couple of weeks each though. Nice cars.