I was driving up to durham a couple of years ago, and noticed a police 5 series BMW behind. When i pulled into the services they pulled up next to me. I was expecting a grilling but they were just friendly bobbys. I noticed the leather interior and manual box so i had to ask: M5? "Yes matey, you stick to the limits wont you"

Err.... yes officer.
Wouldn't want a saff on my tail either!