Took me a while to figure out what y'all were talking about. Over here a tow bar is something on the front of the vehicle so you can tow it, like behind a Motor Home. A bumper or trailer hitch is what you guys are talking about. So you're saying that if you buy a hitch that you can't mount it on your car and pull a trailer if you want to? I'm surprised you're not required to get government approval to change colors on your bonnet stripes.