At least two Tesla models have towing options (Models X and Y). Hills are not a big problem because you get some of the energy back when you go downhill again.

At least two Tesla models have towing options (Models X and Y). Hills are not a big problem because you get some of the energy back when you go downhill again. The real issue is the air resistance of whatever you're towing, which you cannot regenerate. To mitigate this you drive slower and accept some range decrease.