The laws of physics and impact to fuel economy do not change for ICE vs. EV on the implication of cooling, hill climbing, headwind or speed, while they are better for EV at altitude and braking.

The Tesla is a great option, would be some considerations for really long-distance relocations, but otherwise wholly adequate, and dramatically better as a vehicle overall. I envy the opportunity to consider it, the towing option for the Model 3 is not an available feature at this time in Canada.