I've been there several times with my RV. The backcountry strip runs parallel to the speed tracks. Cool place indeed.
You can do the speed run in your RV too.
Vlad, it was your previous posts that made me divert my trip to do this!
i dunno know. i try very hard in the winter to avoid any parking, taxi area where a road vehicle may have been and dropped, or melted salt from the road.