Because you never know what trivial bit of information may ultimately prove to be vitally important.
I love old cars.
I guess someones daily driver was in the shop so they took there "other car". You'll know who it belongs to when you go back to work on Monday and see a car with the bumper sticker: "My other car is a Model T"
If you compare a Model T and a Ford farm tractor, it looks like they share the same engine, transmission and differential. I don't know when they quit making the Model T, but the tractor was in production for quite a long time.
The oldest Ford tractor I'm personally familiar with is the 8-N, which had no differential and couldn't possibly have had the same transmission as the Model-T because the 8-N had a top speed of only 8 mph.
I can't speak as to the innards or gearing of the 8-N transmission, but the ancient tractor I learned how to operate had one long rectangular 4 cylinder engine block, mated to a transmission of matching dimensions. That rig looked a lot like what's under the hood of a Model T. For all I know, it might've been a FarmAll or a Case, but I'm almost certain it was a Ford.