The San Francisco Municipal Transportation Agency (SFMTA, or MUNI) is the main transit service provider for the City of San Francisco. In a 7-by-7 square mile radius, MUNI manages to operate 54 bus lines across San Francisco, and is one of the few transit providers with some history and heritage - MUNI's two historic streetcar lines, the F Market and the E Embarcadero, utilize vintage streetcars ranging from the 1900s to the 1940s, including streetcars from Italy, the UK, and Japan. Perhaps the most famous mode of transportation on San Francisco has to be the historic Cable Cars. These moving pieces of history have been around since the early 1900s, when it was impossible for automobiles to climb San Francisco's famous hills. The Cable Cars have stuck around for well over a century, and today are part of San Francisco's history.