"A modern-looking underfloor-engined dual entrance coach, with roof luggage rack, features in a scene which culminates in a child getting its head stuck in the steering wheel!" [a Renault Car, circa 1950)
"A 'hotel bus', seemingly a French pre-war 20-seat normal control vehicle, also with roof luggage rack, appears several times in this classic French comedy." [it's a Citroën] (thanks Bill Mellor)