Here are four encouraging quotes from Armstrong that should also give you an idea about what lies ahead for PACCAR. Like most leading truck manufacturers, PACCAR is cautious about the North American trucking markets: It projectsindustry Class 8 truck sales to be 200,000-230,000 units in 2017, slightly lower than the 2016 midpoint estimate but significantly down from 2015 sales of 278,000 trucks.