Here in North central Ohio fuel is over the $5 mark as well. I see no slowdown in the amount of traffic on the roads, I'm rural with 2 major state routes running through my small village. One going North/South the other East/West. Camper traffic is still strong along with drag racers headed to summit raceway park. Boaters are taking the biggest hit with fuel over $8 bucks at most marinas on Lake Erie but, my boater friends say boat traffic at the Islands is down some with the exception of the holiday weekends.
I think it will have an impact on the trails this coming riding season but not by much. Most folks are still going to ride no matter what, maybe the less popular destinations benefit more as they offer less travel in the vehicle and trips become shorter. The weekend warriors may do a few less trips a year, what's not going to change are those that do weekday riding. This is where my group is, reservations have been set for months now. One trip (6 days) in the Central/East side in January and one trip (7 days) on the West side late in February. Our group has had discussions on how much more it will cost but not one word of canceling out.