I think it was mentioned earlier but the idea was that if you have an RV which is already pretty long putting a 20' trailer on the back would make it very difficult to maneuver in a lot of campgrounds. However if you tow a vehicle 4 down you can simply detach it when you get there.Not to be anti but just putting it on a trailer would solve everything. Sure no brain twisting hand wringing and towing is towing. Life is challenging enough without creating issues at least for me. Trailer equals no brake or lights issue and you could even get it home if you broke while wheeling. Just an old geezer's thoughts.