I wouldn't but the speed limits don't keep them from going that fast now. The people maintain their vehicles shouldn't have to continue to suffer. Just remind them that it's the max not the mandatory.
Sorry but what happened to capping it to 75 drivers like you said in the previous thread? 100 driver$, 4 run groups = fewer sessions = less time on track
June is a few months away what's to say you won't just rai$e the driver cap again at that point?
Fish Oils, Glucosamine, Chondroitin, MSM, 5-loxin...all good stuff for your [and your dogs] joints.
For dogs:
Offer different levels based on severity
http://www.drsfostersmith.com/dog-supplies/hip-and-joint-support/ps/c/3307/58