In addition to regular city buses, the Transit Authority of River City (TARC) also operates a series of motorized trolleys. The trolleys connect different parts of the hotel and entertainment district downtown as well as the Bardstown Road shopping and entertainment district.

Photo by Derek Cashman.

	The copyright holder of this file, Derek Cashman, allows anyone to use it for any purpose, provided that the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted.
	Attribution: Derek Cashman Attribution

From : http://en.wikipedia.org/wiki/Image:Louisville_4thStreet_trolley.jpg