If your high voltage line is conducting enough to the ground that it's sparking, your vehicle isn't going to work. Electricity follows the path of least resista

If your high voltage line is conducting enough to the ground that it's sparking, your vehicle isn't going to work. Electricity follows the path of least resistance and a path to ground is a lot lower resistance than a motor coil. EVs eliminate a lot of polluting failure states of ICE vehicles. There just simply aren't that many things to burn or leak and still have a functioning vehicle.