Doodlebug

In the early 1930s,  small railway operations were looking for ways to cut expenses. One effort to do that resulted in the development of the "Doodlebug".  This involved the conversion of a passenger car into a motorized railway car.  Typically a Model T engine would provide the power and would be fitted to an extended frame of a  car by the railway shop. With the addition of a headlight and of course a bell, you had a pretty economical unit. In the 1950s the concept was rejuvenated in the form of the Rail Diesel Unit (RDC). 

My model was made in a similar fashion using a motorized truck just like I did on the Toonerville Trolley.  That's one helluva bell hanging out there!