Wireless supercapacitor trams could bring multiple benefits to the operation of Melbourne's inner-city transport network.

Leading figures in both the rail industry and the sustainability and efficiency sector have recommended that Melbourne gradually dismantle the overhead wires that supply the city’s 250-kilometre tram system with power. Bryan Nye, chief executive of the Australasian Railway Association, said the development of new power technology has made it possible to remove the overhead lines…