When you automatically throw kitty litter under the car when you stop to soak up the dripping oil?
Stand outside in the rain watching the water bead up on the new wax job on the car.
Look at the car for hours while others come and go and you didn't really even notice that they were there.
Hide in the office to look at the questions and answers on threads on this network.
Take pictures of every thing that you do to your car so you can produce a "how to" and put it in your locker.
The scary thing is - like Lwin said - I have done, or have considered doing most of this. No I am not going to say what I have done, well, it probably would be easyer to say what I have not done.
That is what is so fun about this car, it does seperate us from others.