@b16 - not really amazing really. You see a muscled up gymrat, you think protien powder & HGH, you see a hot gal....well, it's a "PG" site, you figure that one out.
Cars aren't much different, people that wax the heck out of a garage queen generally have a big house & big budget to fit.
An 80 like some here have - we can tell who feeds quality parts & labor to an 80, and often a guy who does a FAS is the guy who will run a vacuum in one & wash it somewhat regularly. He put a whole day into his axle, he probably wants his carpet somewhat clean. I know I do.
The one that need absolutely everything, is missing a mirror (sorry dude), smells like mold & is littered with old MacDonalds bags & cups is probably not going to be as serviced as the 8/10 LX450 coming from a wealthy suburb.
Law of averages.