their hearts were too small to pump blood to their huge bodies. It was like trying to run a Mack truck on a Volkswagen engine, and their hearts gave out.
Mary swept through the board meeting like a Mack truck.
Abuses committed by overly aggressive states have resulted in federal rules and paperwork motivated by the fear that without rules and record-keeping requirements, states would show up at the Treasury with a Mack truck to take away all the cash they could.