일단 이동성을 확보하게 된 내연기관은 증기선이나 큰 공장을 위한 증기기관과 달리 탑재된 차량이 많기 때문에 많은 엔진이 제조됩니다. 따라서 내연기관은 다른 엔진이 이룩하지 못했던 대량생산의 혜택을 볼 수 있게 된 것입니다.
So, once you have mobility, now you're making a lot of engines because you've got lots of units, as opposed to steam ships or big factories where you're not making as many units, so this was the engine that ended up benefiting from mass production where all the other engines didn't benefit.