I don't know; The TT looks in good shape. Tin is straight and the tires aren't flat. Still has the lights. Could be the owner doesn't have room in the garage.
It looks like it is about to become a Bus. Extra supports were added for the long running board and the start of a second seat. There is room for a third seat and maybe one behind the rear axle.
Note the three letters on the hood:
remains of a firetruck
I imagine Erik is correct. In its first life it was probably a fire truck. Later, given this photo, maybe used as a farm truck.