I don't know if anybody is interested in this but anybody with an interesting car can get a package ticket for 60 euros including 2 general entrance tickets, parking within the circuit, plus the chance to join in the parade (Bugatti) in the evening.
http://www.lmstory.com/Sorry this is in French but it's run by the Parisien ACO branch and is pretty much a froggy thing but fun and very laid back.
