An interesting topic came up on a RIB forum I'm a member of, can you tow a boat with an electric car - more over can you reverse an electric car into the sea? Who knows but it got me thinking about towing a caravan at least with an electric car and found this:
"On day one of their towing trip, the car was driven for just over five hours and spent more than three hours being charged. Even towing such a light caravan made 100 miles or so between charges a realistic maximum."
I beleive you can get a tow pack for a Tesla Model X with a towing capacity of 680kg, the Jaguar i-Pace is rated as 750Kg.