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    Video: King County Metro Endurance Test of Proterra Battery-Electric Bus

    April 3, 2016
    King County Metro Transit (KCM) has completed an accelerated durability and reliability test of the Proterra Catalyst 40-foot battery-electric bus.

    King County Metro Transit (KCM) has completed an accelerated durability and reliability test of the Proterra Catalyst 40-foot battery-electric bus.