Tour de France Promotional Caravan
The idea of the "official" mobile advertising in the Tour de France was born in 1929 to finance the costs of the race. In the 1950's and 1960's, a number of firms built specialized vehicles to be run in the Tour de France publicity caravan that rolls though France ahead of the peloton. Since the three-week event routinely attracted over 10 million spectators, it was an ideal venue for advertisers to reach a broad audience. This practice continues today.