No programming ideas as such yet, I thought that, weather dependant, people could park up in some sort of configuration that best shows off as many cars as possible, and it would be a place for people to talk about all things automobilia. Might be a good idea if drivers want, to print off a sheet with some of the details about their car, and put it in the windscreen perhaps?
If anyone wanted to look up a possibly route to go for a short drive (further up the Ringberg road and over into the villages in the hill summits is nice, Utlah and I drove that last year on a spare day before the Con) then feel free to post or bring details.
All I've done is organise a meetup time and place for people, so that they know when to get together. From there, it's up to you what you do