 AUSTIN, Texas--BUSINESS WIRE--Hyliion Holdings Corp. NYSE: HYLN Hyliion, a leader in electrified powertrain solutions for Class 8 semi-trucks, today reported its second quarter 2021 financial results. Key Business Highlights Hired Dennis M. Gallagher as Chief Operating Officer, an experienced industry executive, with a proven track record in the heavy-duty commercial vehicle space Announced a 300-unit Hypertruck ERX product reservation agreement from Detmar Logistics, an industry-leadin 