Some people men...don't care much how they look...but they do care about their car...
Most people - mostly men? - seem to feel self-conscious with a dented car...or a filthy one...
If I have a nasty looking 1994 standard Buick, I don't care, what I look like!
The guys in my street don't wash, but that's to save water for their car. Mine is extremely dirty.
I know men that take more time on their appearance than girls
I rinse off my car every day and wipe it down, because i don't like dust from work, staying on it...
I wash my ass every day too...so its... Win/Win.