One could pretty easily imagine tow trucks carrying around a 1kWh battery with some standard DC connector, and that would get you a couple miles. A 1kWh batter

One could pretty easily imagine tow trucks carrying around a 1kWh battery with some standard DC connector, and that would get you a couple miles. A 1kWh battery is not big; e-bicycles carry ~500Wh. Would be literally the electric equivalent of a gas can.