The E sold badly because it is not designed as an only car. For a trip across the country, for rear seat space, for boot space, forget it. I don't commute, charge at home, and the E is a fantastic driving car, acceleration is swift and silent, up to 50 it beat all the rivals in a drag race test just pipped by the mini by 60, manoeuvrability and turning circle insane, and the price gave you a lot of tech, the camera mirrors and 360 degree cam view brilliant for parking, even self parking works well. Mercedes is now copying the screens built into the dash, rather than having a tablet stuck to the top (a bugbear of mine).
The Civic is a great car but just too big now, the Jazz really is the next best thing to the E for comfort, long trips and 60mpg, but the engine cutting in is still noticeable and not as serene as electric driving. I think the infrastructure needs to be a lot better for full electric, but the pleasure of silent one pedal driving is great. The economics of future driving is now up in the air, it could be that China will take over the market with cost and obliterate traditional makes in the same way the Japanese cars came and knocked down Ford and Vauxhall in the past. But after the hottest year yet something has to give for our grandchildren to have a chance.