I have a big sticker with my travelling photoclub site address in my car and it works : they received calls from people who saw it, describing my car.
Maybe an idea?

Yeah. Please add your comment to the article of the team if not happened already!

I have had similar experiences with a T-shirt label that includes my nickname on numerous social networks - this means you get contacted more often. You are still the best advertising figure for yourself ;-)

ok I will !