The Milwaukee Road's class EP-3 comprised ten electric locomotives built in 1919 by Baldwin and Westinghouse. They were nicknamed Quills because of their use of a quill drive. Although they were good haulers and well liked by engineers, poor design and constant mechanical problems plagued them for their entire lives and they were the first of the Milwaukee Road's electric locomotives to be retired.
Santa Fe "doodlebug" originally built by the Brill Motorcar Company as a gas-electric 535 HP, the had major rebuilds in 1948 and when it was fitted with a diesel engine and components from Santa Fe's first passenger locomotive.
The Willys Jeep MB rail fitting above (called a “Short Cut”) was created because although many world countries had established rail systems, working roads were in short supply. This innovation was a success.
https://flic.kr/p/CDwYy5 | Railroad Avenue is on the other side of town | A westbound Santa Fe train roars through Hanford, California on a summer morning. Since the Southern Pacific was usually the first railroad into towns in California, the road along the SP was "Railroad Avenue," while the street paralleling ATSF was usually "Santa Fe Avenue."