A little less than a happy high

This is the one thing I'll ever say about the series since I'm pretty sure I won't be able to get past the writing ("Things that are dead should stay dead," says Dean. "You just don't mess with that stuff." o_O)... How is it that our heroes cruise around in a mint condition classic Chevy that is perfectly tuned and always buffed to a high-gloss shine, but they can't manage to put grease on the fecking door hinges so they don't creak like an Age of Sail frigate???

Dear lord people.