The Drunk Englishman

The French policeman stopped his car and asked the gentleman if he had been drinking.
With great difficulty, the Englishman admitted 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 proceeded to alcotest (breath test) him and asked the Englishman if he knew under French Law why he was going to be arrested.
The Englishman answered 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 bloody side??? I