(Sorry for the title, just couldn't avoid it.

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Keep in mind that even if there is a hitch (and there's no padlock when you return the vehicle), you need a working wiring harness. I only looked once (out of curiousity) but didn't find a connector on the Ford SUV that I had a whle back. If it's not there it's easy to add, but at a cost. And that's if you can find someone to do it. "Is this your car, sir? We'll have to call Hertz for authorization."
Given the cost and potential hassle, you might be consider (gasp) small a U-Haul truck. They come with towing packages.