In San Antonio, TX on April 7th they are commemorating the 50th Anniversary of Hemisfair Tower built for the World's Fair held here in 1968. I know this is a bit obscure to mention it here but you never know who drives what where. It's for 1968 vintage only with a maximum of 30 cars. I talked to the coordinator and asked her what they had so far. Bottom line, they have received no Mercedes entries so far. Anyway it's an interesting event.
Tower of the Americas 50th Birthday Celebration & Car Show