The pic I posted if of a TandemTow brand dolly. The wells for the towed car are adjustable front to rear so you can dial in how much weight the cart exerts on the tongue. They are available with brakes, too. Just trying to anticipate questions your hubby might have. The main drawback I see of this kind of dolly is that you can't really use it to haul either a car or a cart, but really need to haul both. With just a cart there would be too much weight on the tongue, with just a car there would be too little weight on the tongue. But, when you want to have it all, this seems a good solution to me.