The study was commissioned by the Low Carbon Vehicle Partnership, which is jointly funded by the British government and the car industry. It found that a mid-size electric car would produce 23.1 tonnes of CO2 over its lifetime, compared with 24 tonnes for a similar petrol car. Emissions from manufacturing electric cars are at least 50 per cent higher because batteries are made from materials such as lithium, copper and refined silicon, which require much energy to be processed.
and then there's this about how much methane "biodegradable" products release in landfills:
If we want to maximize the environmental benefit of biodegradable products in landfills,” Barlaz said, “we need to both expand methane collection at landfills and design these products to degrade more slowly — in contrast to FTC guidance.