How about cars too? BMW doesn't allow you to use dollies. When one is stuck in park, you are expected to skate it. Yes it can be done damage free just like those nifty tow show demonstrations. In the real world, how often is the car perfectly centered right behind the bed with the wheels facing straight? This is especially fun on the highway, in a short driveway on a main road, or a tight parking lot. How about when you go to drop. Not every dealership or shop has a huge lot with plenty of room to drive out from under the car. I've noticed they never show how to unload a BMW in the training videos.