Yupp. Momentum is deffinately the key, expecially up some of the hills we took. Which was the problem really on the hill that it wasn't possible to take, because there was no way to get a good start on it. The other time I got stuck I just took a bad line and rolled back, but the exhaust wouldn't allow me to take another try at it as it got hooked up on the downslope. So the only way was forward with a strap and some help from a 4x4.