How to speed in good conscience

"Dad, are you speeding?"
"Nope. I'm going 72."
"But the speed limit is 65."
"You see that cloud up there?"
"Yeah."
"Is the edge straight or fuzzy?"
"Fuzzy."
"Speed limits are a fuzzy boundary. You can go faster if you're not afraid to get a ticket."
"So the people who go really fast aren't afraid at all, are they?"
"Right. Make sense?"
"Yup."