Plows running on overhead lines makes for very bad failure cases. Power outages are common in heavy snow storms. Emergency services and repair crews usually nee

Plows running on overhead lines makes for very bad failure cases. Power outages are common in heavy snow storms. Emergency services and repair crews usually need to reach areas without power urgently. With plows run by overhead lines, these would be the areas not plowed. Even if you kept a percentage of plows gas, you'd be risking the scale of power outages not overcoming your back up capacity