The new Pinnacle highway truck is being offered in a 116' bumper-to-back-of-cab day cab configuration, as well as 48" and 56" flat-top,60" and 70" mid-rise and 70" high-rise sleepers-all built on Mack's Advantage highway chassis. Key to the advantages of the new model is entirely new driver environments, created after comprehensive research of customer preferences and ergonomics-including definition of the optimum driving position for operators of Mack vehicles.