"Compare the costs of a tow bar and braking system
and lighting system - probably 2 to 4 thousand bucks - with just driving the car. The toad will sustain both tire and brake wear in either case, so it may just cost you a couple of oil changes and fuel to drive rather than tow. Plus, you don't have the down side of hooking/un-hooking."
So, in other words both vehicles are driven all the way? My wife wouldn't be too happy with an arrangement like that, it would cut into her napping time.