AUSTIN, Texas–(BUSINESS WIRE)–Hyliion Holdings Corp. (NYSE American: HYLN), a developer of sustainable electricity-producing technology, today announced the successful operation of its full KARNO™ Core system on diesel fuel. This achievement marks a significant milestone towards the commercialization of the KARNO solution, confirming its operational effectiveness on liquid fuel in addition to its previously validated portfolio of gaseous fuels. During operation at the company’s Cincinnati, Oh