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As ridiculous as it sounds, in NC and most States, the damage is your responsibility. In NC, when they attach a chain to the car "they legally own it" through a "mechanic's lien".
Any increase in kWh is likely to come with an increase in weight unless the battery technology changes. I wonder how much range would be lost due to moving more mass. I assume a lot of analysis went into the relationship of weight, capacity and efficiency.