Great post Howard. Efficiencies aside, no matter how battery capacity improves, we already don’t have the infrastructure to cope with home charging if even just 10% of cars were electric. Domestic supply is only rated at 9kw per hour, blocks of flats less per household. By the time batteries improve to offer decent range on twisty roads and cold conditions, they’ll need all day and all night to recharge.

Put it this way, you get your 600kw hour of petrol in 5 mins, and how may petrol pumps are available per car? If you need 50 mins to fill your tank, we need 10 times as many pumps.