Recently, GM and a few other car makers have decided to discontinue producing electric vehicles, claiming that the production was economically unsustainable. The companies recalled many of the vehicles that had been leased, leaving behind many disappointed consumers. Much of the focus of large auto companies has been shifted towards gas-and-electric hybrid automobiles, which have been receiving a lot of hype and media attention. There are notable mileage limitations with solely battery powered vehicles and they require several hours worth of recharging. Additionally, while operation of the vehicle produces zero emissions, the power plants that produce the electricity used to power the battery are nowhere near zero emissions. Zero emission technology has a long way to go from here.