Rio Tinto is playing up its copper business, as the take-up of electric vehicles rises. (Jono Searle/AAP PHOTOS)Rio Tinto is playing up its copper business, as the take-up of electric vehicles rises. (Jono Searle/AAP PHOTOS) Credit: AAPThe world's biggest iron ore miner is racing into a new era driven by electric vehicles and artificial intelligence infrastructure, supported by stronger input from its copper plays. A bullish Rio Tinto boss Simon Trott said all of the group's top-tier commodities, including aluminium and lithium, were at the heart of technology shifts. Oyu Tolgoi is heading towards 500,000 tonnes a year, which would be enough copper to help power over six million electric vehicles.