Now this is the first time we know of that a road-going EV has pulled an airplane, in this case a Boeing 787-9 Dreamliner. Pulling anything really comes down to torque and traction, something the Tesla has in spades. This model has all-wheel drive thanks to a dual-motor setup and makes peak torque off-the-line (though finding a Tesla's exact torque rating is about as easy as searching for the Ark of the Covenant).
Not to detract from the Tesla's achievement, but the 787-9 is relatively lightweight for an aircraft of its size. It uses a combination of composite materials, aluminum, titanium and more to help reduce weight. Still, we're sure the Model X would have no problem with a larger or heavier plane to tug. And anyway, it was enough to set a Guinness World Record as the heaviest tow by an electric production passenger vehicle.