The break that much stuff in a day the truck would of had some good sized wrecks. I race at in indoor track and they have a pretty technical layout with some good sized air. When you miss the landing ramps and land at funny angles things tend to break and especially when it is cold as that just adds to the problem.
Are track area is fairly cold but the pits are closed off and warm. Breakage is normally a rear carrier, shock caps, and bent axle or shock shaft depending on how hard the crash was. All in all for the way the guys beat their Slashs at are track it is amazing that they don't all break every run.
Lets say they are not too gentle on them.