A good friend of mine recently got an Axial Wraith and in the last month or so, we've managed to find a few great places to crawl. The Wraith is surprisingly scale in a lot of ways, despite being modeled after a goofy rock buggy.
Rock crawling is like the "puzzle genre" of the autosports world. It's fun to be able to get a taste of the unique challenge it presents, without having to spend thousands on a full sized rig.
Some video I shot.