Wellll... I will go back on that to some extent; it depends on the stretch of highway, too. But for the most part I've found cops to be pretty darn nice.
As for people in general, Midwesterners are pretty nice... I didn't really like LA when I was there. I lived in the KS suburbs of KC and people weren't overly kind there... actually at school people could be pretty mean, but that's partly just teens in general... I moved from there to a town that hardly has any sidewalks... people are pretty nice there, but mainly because EVERYBODY knows you and the only way to get away with anything is to be nice to everybody (or that's one way to look at it
)