A prototype all-electric bus that its developers say can be driven from Melbourne to Sydney on a single charge was unveiled in Melbourne on Friday, ahead of a road-test on Saturday that will see it undertake the interstate journey. The bus is officially certified, to international standards, to drive a huge 1004km on one charge. The next biggest range our research efforts could find for an electric bus was less than half of that, at about 402km, in a US model.

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