ive got a story like that but i was in the m3.
i came out of a servo onto fairford rd (its a 3 lane rd, very wide and i had just gotten it back on the road and run in as we had just rebuilt the motor). i left the servo and put the foot down and was sideways till the set of lights around 50m away. i know i shouldnt have done it bla bla bla etc etc.
coppers in an undercover saw the whole thing and pulled me over and asked the usual things after they checked my record, why did you do it? that was stupid, you've had your car impounded for doing the same crap before, give me a reason why i shouldnt impound your car now. i was totally apolagetic, very sincere and they let me off. i know i was doing the wrong thing but the m3 handles so well - i couldnt help it.
so yeah, cops are tops every 1/100 times. every other time theyve been absolute flamin mongrels... a bunch of c*nts too.