Citizens Street Railway mule car No. 69 is one of the oldest transit vehicles preserved in both the United States and the world. Built in 1868 by Stephenson, No. 69 was part of a second order of mule cars, also known as horse cars. Designed to eliminate the need of a conductor and second mule, the cars were known as “bobtails”. The car transported citizens across Indianapolis from 1868 to 1892 on Massachusetts and College avenues.