Roadrailers sprint upgrade into Caliente, California. Roadrailers were Semi trailers with railroad trucks and rode directly on the rail. This operation was short lived on Tehachapi.

ATSF609 was still less than 10 years old, and the paint looked good as it shoved hard into BNSF4669 South (East).... Most mid-train helpers by this date were DPU on Tehachapi.