That's an... interesting question!
Unfortunately, it's not possible for a poop to propel a car. Poop is a biological waste product that doesn't have the physical properties or energy density to generate the force and motion needed to move a vehicle.
Cars require a significant amount of energy to move, which is typically provided by a fuel source like gasoline, diesel, or electricity. The energy released from burning fuel is what propels a car forward. Poop, on the other hand, is just a soft, squishy substance that doesn't contain any usable energy.
Additionally, even if we were to somehow harness the energy from poop