Buses have a reputation for being some of the least environmentally-friendly vehicles on the road, but if new-generation electric buses being trialled become common place, they could soon be among the greenest. (“New-generation…” You see what I did there…) UK bus manufacturer Wrightbus has just launched electric vehicles which will operate on the number 7 route in Milton Keynes. The route carries an estimated 800,000 passengers every year between the suburbs of Bletchley and Wolverton. This is part of a five-year trial programme which is being led by the European arm of Japanese company Mitsui and Arup, the UK engineering group. If the buses prove successful, they could then be rolled out to all the bus routes in Milton Keynes, before perhaps being introduced in other locations. Several other towns and cities worldwide already use electric bus systems, including Genoa in Italy, Mannheim in Germany, and Utrecht in the Netherlands.