One day in late December, a Navistar truck delivered a load of freight from a rail yard in Tucson, Ariz., to a distribution center in Phoenix, an 80-mile run that took about an hour and 20 minutes.

[Stay on top of transportation news: Get TTNews in your inbox.] Navistar Inc. announced it intends to produce a zero-emission longhaul truck using fuel cell systems supplied by General Motors and will ...