1. Straightening the hood star on my Mercedes cars. It ALWAYS have to be perfectly straight.
2. Driving past shop windows just to check out your car's reflection.
3. Walking up to any Mercedes similar to my own to check out the condition, model and mileage.
Guilty - and if nobody is around, straightening that car's hoodstar
4. Paying extra for underground parking when driving my 350SE just so I can hear that nice V8 noise amplified and spin the wheels on the slippery cement floor.
Guilty - my diesel also has that deep rumble to it and shifting 1-2 almost always chirps especially early morning
5. Car has to be clean so I can see the reflection fluidly moving over the hood behind that star
6. They know you're an enthusiast when owners of similar cars look, smile and wave/give a thumbs up as they drive past, or alongside, yours
7. Owners can have a spontaneous chat at the parking lot, as if they knew each other prior
8. Complementing each others' rides is proper etiquette
9. The older, the better
10. If it doesn't look old, the better too
11. You turn on the standing lamp feature, when parking the car
12. You can tell the approximate year and model of a similar car parked next to yours just by looking at the features and interior