The most efficient solution for 80% of trips is 10lbs of batteries and a wire for 19% But sodium batteries are very nearly in mass production so while we're co

The most efficient solution for 80% of trips is 10lbs of batteries and a wire for 19% But sodium batteries are very nearly in mass production so while we're continuing to insist that petrol is 100% of the problem cars cause rather than 50% I guess that will do.