The biggest obstacle to doing that again is logistics. That was a 15-or-so hour day for us, and after all that, two of the damn cars were still running. It also takes a lot of work to wrangle all those cars to have them available at the same time in the same place, not to mention doing so on a day when there are enough drivers available.
That said, it would be nifty to do it again, especially, as alluded to, many of the cars we used in the first one have been redesigned and there are a few brand new cars, too. We have been talking about it, but not sure when it might happen.
