What is car configuration?

Some articles on cars, car configuration:

MTR EMU SP1900 - Overview
... KCRC has arranged 96 cars of 250, in 12-car configuration, 8 sets of train joining the train fleet of East Rail Line with the existing Metro Cammell EMU ... The remaining 154 cars had been reserving until the inauguration of West Rail Line in December 2003 ... They has been arranged in 7-car configuration, 22 sets of trains running on the system ...

Famous quotes containing the word car:

    The car has become the carapace, the protective and aggressive shell, of urban and suburban man.
    Marshall McLuhan (1911–1980)