I don't know what man pulled what aircraft and how far, but here are a few weight
values for empty aircraft
DC-6 54,000 lbs
737 84,000 lbs
Shuttle Endeavor 165,000 lbs
There must be something to it, otherwise they would have just towed the Endeavor from LAX to the Museum with a couple of big rigs and saved the several million it cost to move it the way they did.
BTW: The shuttle and the mover together weighed more than the bridge could support, so they had to offload the shuttle, move each part across the bridge, and then remount the shuttle on the mover.
And Toyota paid the Museum big bucks for that oportunity.