Contaminants in fuel can cause damage to cars. I don't know if retailers tend to carry insurance for this but typically they are responsible, although proving i

Contaminants in fuel can cause damage to cars. I don't know if retailers tend to carry insurance for this but typically they are responsible, although proving it may not be easy. I imagine the risk would be quite rare and fairly well handled with insurance. What's patented? Seems like a ridiculous patent if it entirely covered all practical manner of swapping batteries to recharge an EV.