One billion dollars was promised towards building electric vehicles in Ontario on Monday – just the latest investment from government into the industry that hopes to do away with gas-powered engines, and replace them with batteries.People have long talked about electric vehicles, or EVs, as being a crucial element in getting emissions down to net-zero; but, as the Globe’s mining reporter Niall McGee points out, an electric vehicle’s carbon footprint is more than just a pinky toe. While actually driving an EV does not create emissions in the way that gas-powered cars do, the environmental impact of mining the minerals for the cars’ batteries is significant.