Car # discription	History	Included in Trainworx part #	Trainworx production date	Trainworx stock status
Utah 4000	Ex Mo-Pac	34171	1-05	Sold out
Utah 4001	Ex Mo-Pac	34172	1-05	Sold out

There must have been a mishap on the Utah Railway. These Bethlehem 100T quad hoppers are possibly second hand Mo-Pac cars. After being wrecked the Utah Railway acquired these two cars and painted and numbered the cars 4000 and 4001.