yes it is true!
here is proof you can tow a 29 foot airstream across country with a 1/2 ton truck without crashing into flames!
this is a campground my wife and i visited on our way back from florida, 92 suburban, 350/350 eng and trans with 3.73 gears.
we made this 2500 mile trip many times with no major problems other than a quikee lube kid that put 3 extra quarts of oil in the suburban in melburne florida. (that is a whole different story!!)
you call them ferrets, i call them weasels.