Sure but there are cases where it just does not make sense. Case in point, regular sized everyday cars. There might be viable applications for semi-trucks tha

Sure but there are cases where it just does not make sense. Case in point, regular sized everyday cars. There might be viable applications for semi-trucks that provide an economical advantage over batteries. There might be good use cases related to energy storage & transportation, aviation, and water craft. There is also likely other industrial applications I'm not familiar with.