you find yourself in the middle of nowhere with a dead battery and no way to roll-start your vehicle. What do you do? If you happen to have enough rope lying around (or belts, for that matter), you can conceivably lift the drive axles, wrap the rope around a tire and pull with all of your might with the transmission in gear and the ignition on. The motion should be enough to turn the engine over and start the combustion cycle.
We should mention a few safety precautions here. First, make well sure that you can release the rope as soon as the engine fires, or you’ll quickly be introduced to the front fender well. Second, don’t waste your effort on an automatic. There isn’t a power in the ‘verse that can cause a slusher to turn over its engine.