In answer to a couple of points
Tesla are developing a car that uses the battery as part of the frame. Thereby reducing weight, adding strength and moving the actual batteries further inboard away from potential damage in a side impact.
Tesla aim to recycle their batteries and recover the lithium for use in production of new batteries.
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A journey of a thousand+ (epic) miles, begins with a single step, (to the door of an 8). Lau Tzu
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