All this talk about electric vehicles reminds me when I work for British Railways Research Department and I think it was 1970's we had some electric vehicles (cars) in to test / evaluate, I was not on that project but I think the lack of any good mileage let them down as the battery development needed more work.
Another project was work on a 'Sodium-Sulphur' battery to run Electric trains on, The operating temperatures of 350 °C
That project was dropped after the fire brigade was called out many, many times when the battery burst in to flames (Highly toxic fumes).
Went through Heswall on the Wirral to-day at about 1300hrs, parked at the side of the road was a Lady Penelope Pink (mat) Range Rover Evoque. Must of been a custom job, not seen anything like it in Evoque form before.