This actually happened to an Englishman in France who was totally drunk.
A French policeman stops the Englishman's car and asks if he has been drinking. With great difficulty, the Englishman admits that he has been drinking all day, his daughter got married that morning, he drank champagne and a few bottles of wine at the reception, also many single malts scotches thereafter.
Quite upset, the policeman proceeds to alcohol-test (breath test) and the Englishman verifies that he is indeed totally sloshed. He asks the Englishman if he knows why, under French Law, he is going to be arrested. The Englishman answers with a bit of humor, "No sir, I do not" but do you realize that this is a British car and my wife is driving on the other side? LOL.