Streetcar and Lawnmower

An old Washington streetcar and a manual rotary lawnmower in the America on the Move exhibit at the Smithsonian National Museum of American History. I was wondering what a lawnmower was doing in the transportation section, but then I realized it looked a bit like the archaic form of a more modern mode of transportation.

Photos taken with a Sony Ericsson Communicam attachment (on T300 phone).