Because the math doesn't make sense. The added weight, build cost, and complexity make it less value than plugging in. Your "running out of battery in the midd

Because the math doesn't make sense. The added weight, build cost, and complexity make it less value than plugging in. Your "running out of battery in the middle of nowhere" scenario doesn't make sense. If you're that close to help you can walk there in less time than it'd take to charge the car.