This happened to an Englishman in France who was totally drunk.
The French policeman stops his car and asks the gentleman if he has been drinking. With great difficulty, the Englishman admits that he has been drinking all day, that his daughter got married in the morning to a French man, and that he drank champagne and a few bottles of wine at the reception and a quite few glasses of single malt there after.
Quite upset, the policeman proceeds to alcotest (breath test) him and asks the Englishman if he knows under French Law why he is going to be arrested.
The Englishman answers with humour: 'No sir, I do not! But while we're asking questions, do you know that this is a British car and my wife is driving... on the other side???'
When I parked my left hand drive car near a zebra crossing during a horrendous storm and dashed into a shop, a policewoman told my daughter to move the car. My daughter said "I'll do my best Miss, but I'm only 11!". This from the police force that told us because we lived in Germany and we were going home tomorrow, a theft from our home couldn't be classed as a crime.