Article L121-11 of the French Insurance Code
In the event of the alienation of a terrestrial motor vehicle or its trailers or semi-trailers, and only in respect of the vehicle alienated, the insurance contract shall be suspended ipso jure from midnight on the day following the date of alienation; it may be terminated by either party giving ten days’ notice. If the contract is not reinstated by agreement of the parties or terminated by one of them,…