So an update. Now that I'm back from my vacation in Canada...
There are miles and miles and miles of old wheelable logging roads behind my house. So I got my mountain bike and went for a ride looking for wheeling trails we could have a meet on. I, being a dunce, of course forgot my GPS. There are tons of forks and merges and false trails. So I really didn't want to get lost. I've spent over 10 hours being lost in the forest ad it isn't very fun...
Anyway, I found a lot of trails we could easily wheel. Nothing to technical at all. The first 300m is probably some of the hardest part, and if you can't make that just park your car and ride with someone. Some of the trail goes up a rocky river bed, through forest. some water/mud, but I rode through all of it and it is pretty hard bottom. I'll have to take my GPS out later so I can not only explore further, but put up a track on google maps so you can see where it is.
Also, some of it is rather narrow, unless you can drive over boulders or through trees I wouldn't drive anything much wider than my GL (08WRXME)...