This 39’ single dome tank car is black with white lettering and runs on Bettendorf trucks. : Placarded to carry fish oil, this 8,000 gallon capacity car belonged to a series of 100 similar tank cars. Union Pacific was founded in 1862, and was the first transcontinental railroad in the United States. Today, UP is one of the largest railroads in the U.S., with nearly 32,100 miles of track.