Lighter than its predecessors, but with more freight carrying capacity, the railways first indigenously manufactured aluminium goods train rake was flagged off from Bhubaneswar in Odisha on Sunday.Manufactured in collaboration with Besco Limited Wagon Division and aluminium major Hindalco, it also has a lower carbon footprint for every 100 kg of weight reduction in wagons, the railways said.The lifetime carbon saving is eight to 10 tonnes and this means, savings of more than 14,500 tonnes of carbon for a single rake, it said.