Vehicle-to-vehicle charging is starting to be a thing, and there's always the option of using another vehicle to tow you. (You could even use regenerative brak

Vehicle-to-vehicle charging is starting to be a thing, and there's always the option of using another vehicle to tow you. (You could even use regenerative braking on the towed car to recharge the battery.) Realistically, that's an extreme case and some ICE vehicles might break down too for whatever reason. In that situation if there's no other option you'd probably just ditch your car and get a ride from someone else.