It can be optionally combined with the new hybrid system of Mercedes-Benz , which helps to save more fuel and lower emissions. Mercedes-Benz Buses. Oh lol, interesting to know!! Green Car Congress. About 35 of these buses have been in service in a variety of different world cities in order to test the feasibility of hydrogen fuel cells in numerous countries or continents including UK , Australia and China , different operating circumstances and different conditions, especially weather conditions.
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