This is pretty cool—an electric car pulling a full size commercial aircraft, apparently for the first time ever. In particular, it is a Tesla Model X pulling a Quantas Boeing 787. There are a million reasons this is cool, but I think we should just jump to the coolest ones: the physics questions. Does the mass of the plane matter? The Boeing 787-9 Dreamliner has a maximum takeoff weight of 254,000 kg—but this one was empty and had a mass of 130,000 kg.