I was on 75 a little south of Florence (kentucky) doing about 100mph when I noticed a cop coming on the on ramp. I let off the gas (didn't touch the brakes) thinking that I was busted for sure. He came running right up my ass and sat there a couple of seconds and then passed me. The only thing I can think of is that he was either off duty or out of his jurisdiction (sp). I was pretty lucky though.