According to the wikia, it's from the Sodor Lumber Delivery 3-pack.
Also want to point out that the truck in your picture has spoked wheels, which normally are only on engines. Trucks, at least before TM2, usually had non-spoked wheels, like the retail release of that truck had.
Also want to point out that the truck in your picture has spoked wheels, which normally are only on engines. Trucks, at least before TM2, usually had non-spoked wheels, like the retail release of that truck had.