Ain't the above photo a crying shame?! From a documentary I watched, GM lobbied local, state, and federally to get all street cars killed off because GM could make tons of money selling fleets of busses. Guess who already had GM stock? Yup, the people who got rid of the wonderful streetcars. How much pollution have the busses emitted since the streetcars went away? Only US cities that kept their tourist attracting street cars that I know of are San Francisco and New Orleans, two cities that love their history.
read about the re-birth of street cars: http://www.nytimes.com/2008/08/14/world/americas/14iht-city.4.15301447.html