This goes way back.Had a cab ride in a gas electric motor car on the CNW on a branch line passenger run in Iowa,sometime before we entered WWII? Was maybe 10 or 11 Years old? Giving away my age here! One of their big notor cars. All passenger compartment.Towed a RPO/baggage car.One of only two like it on the CNW.Powered by straight 8 cylinder gasoline Winton engine.Very noisy when running at track speed. Conversation was impossible! Engineer sat next to main generator.Had a hand throttle for the engine and a controller box with the "coffee grinder" handle,like the old street car to opertate the traction motors.Think the speed limit on that section was 35 maybe 40mph for the motor cars.Only 72lb rail! Anyway,it was quite a ride!