I just found out about Brimstone and am tickled to see Jeeps/4x4's included. Tennessee is an atv state, that's for sure, but there are also many Jeeps out there.
In 2002, The Tennessee OHV User Survey was released by the Dept of Forestry, Wildlife and Fisheries at the University of Tennessee. The report, now 4 years old, estimated the number of OHV's in Tennessee at over 500,000, the majority of which are 4x4's registered to drive on the road.
So please keep us in mind as you work on the park.
In the next month or two I'll take a trip up check it out for myself.