Holiday parades or precessions
Adopt a highway (and get a free sign with your club's name on it)
French consulate or Embassy events
French festivals
French restaurants (wine tasting events,etc..)
French cultural and language groups
Foreign language departments at local, city, and state colleges.
Weddings (offer to drive the bride and groom away in your Citroen DS or Traction Avant, for free) (i.e. photo opportunity)
There are many other opportunities to promote your car and your club. Many couples would love to re-create their Honeymoon in Paris by having someone pick them up in a French car and chauffeuring them to a French restaurant, a ballroom, a walk in the park, etc.. You car can also make money by being in commercials or films.