That video is an oldie but a goodie.
I took the photos below a couple of weeks ago when we were in Hershey, PA for the RV show.
Not sure if this was done by a RV or not, but the object lesson here is not only do you have to make sure you clear the obstacle, but you also have to make sure you are not going down hill - which raises the rear end of a motorhome with a significant overhang over the rear tires.
Made it through under the roof...
Only to hit it as they were going down this steep ramp.
Maybe one of the RV dealers had one less motorhome at the RV show this year?