![]() various, including EMC/Pullman, Brill/Mack, McKeen Motor Car Company, Rio Grande Southern Railroad (en).M1, a narrow gauge gas-electric doodlebug that was constructed by EBT from a Brill manufactured kit (en) dbr:East_Broad_Top_Railroad_and_Coal_Company.dbr:Budd-Michelin_rubber-tired_rail_cars.wiki-commons:Special:FilePath/Doodlebug_ebt_m1.jpg?width=300.Several railroads, mostly small regional and local networks, provided their main passenger services through doodlebugs in a cost-cutting effort. They were popular with some railroads during the first part of the 20th century to provide passenger and mail service on lightly used branch lines at less expense than with a train consisting of a locomotive and coaches with larger crew. Doodlebugs sometimes pulled an unpowered trailer car, but were more often used singly. In later years, it was common for doodlebugs to be repowered with a diesel engine. Early models were usually powered by a gasoline engine, with either a mechanical drive train or a generator providing electricity to traction motors ("gas-electrics"). The name is said to have derived from the insect-like appearance of the units, as well as the slow speeds at which they would doddle or "doodle" down the tracks. Doodlebug or hoodlebug is a nickname in the United States for a type of self-propelled railcar most commonly configured to carry both passengers and freight, often dedicated baggage, mail or express, as in a combine.
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