outdoor sandy would be the ultimate, all that sand finding it's way into every part of the car, in SA we only have outdoor sandy tracks, my 501x suffers out here, maint. is a pain in the ass, by the way, ask the drivers to do some maint on the cars while doing the review, see which cars is easy to work on and get right again.
(jimmy, you know you would love to do it, rc is your life!)
