Guardian: Press the starter button underneath the steering wheel, and the only way you’d know the Mini E is ready for action is the lights winking on the dashboard. Even as it begins to move, the experience is eerily silent, like coasting down a hill. On the road the Mini E is a quick mover, and its tight steering keeps it nimble in traffic. BMW claims the car should handle like a normal Mini, despite being 20% heavier, and it certainly accelerates like one: put your foot down and you’ll be …