When:
You love the smell of diesel in the morning, and in the afternoon, and...
You hear clattering and your head turns.
You don't mind a little... ok alot... of grease on your hands.
You see different distillates and realize your car will burn them all.
You look back THREE times at your car when you are walking into the restaurant.
You carry enough tools in the back of your car to overhaul the engine.
You carry enough spare parts to fix most issues too.
You realize that your car will still run after it's been hit with an EMP burst.
You have plans to refurbish all the zebrano on the dash and console - someday.
You get sick of people constantly trying to pass you and you decide to pass them instead.
You can't help bit straiten that silver star on your hood.