When we worked for Illinois State Highways we were in Becks Lake Forest Preserve in the middle of the day.
There was a van parked there. We pulled up alongside it with the diesel rumbling. After a few minutes a guy peeked out the curtain. He smiled and went back to it.
It was a humpin' van and he had some chick in there. ROTFLMAO!
"When bad men combine, the good must associate; else they will fall, one by one." Edmund Burke