"gas-electric motor car" . . "rail car" . "Gas-electric car" . "Gas-electric" . . "doodlebug" . . . . "gasoline-electric self-propelled rail cars" . "motor car" . . "gasoline-electric railcar" . "doodlebugs" . . "doodlebug rail cars" . "Doodlebug" . "Doodlebug (rail car)" . "gas\u2013electric motor cars" . . . "Doodlebugs" . . "internal combustion-electric powered railcars" . . "\\\"doodlebugs\\\"" . . "gas-electric" . "Doodlebug (rail car)" . . . "gas-electric rail cars" .