nonono! you got to convince them such a contraption would become a
institute of tradition! much like the red barn at the ultralights, or
the warbirds show, or...

well, you get the idea!

actually, I bet all you need is a orange and white checkered flag and
and flashing red light, and a window sticker of the correct color and
any old words on it (I doubt if they'd look close).

John