Not only that, but their arbitrary safety rules get really annoying. "No you can't hook that onto the bumper hitch, even though its rated for 4500lbs. The rules say you need a receiver." The receiver is still rated for 4500lbs but that's okay.

But then they are happy to slap a receiver onto any passenger car that is not rated to tow at all and let you load up as much as you want into one of their box trailers.