SÖDERTÄLJE, Sweden—Scania AB, a leading European manufacturer of trucks and buses, is installing remanufactured gearboxes in new vehicles at its flagship assembly plant here.

CHARLOTTE, MI—Builtmore Contract Manufacturing has started to assemble Isuzu’s NRR-EV truck at its facility here.

TUVE, Sweden—Every time an assembler uses an electric fastening tool at the Volvo Group truck factory here, the data from the operation is logged and stored. Engineers are now using that data to increase quality.

Two recipients of the Assembly Plant of the Year award (Ford and Kenworth) are using state-of-the-art tools and technology to produce electric vehicles.

Kenworth Truck Co. recently celebrated its 100th anniversary. The company has been a pillar of manufacturing activity in the Seattle area since 1923, operating out of a series of four different local factories, including its current flagship plant in Renton.

STUTTGART, Germany—Assemblers at Bosch’s Feuerbach factory have begun producing fuel cell modules for Nikola Corp.’s much-anticipated Class 8 truck.

JACKSONVILLE, FL—Cenntro Electric Group Ltd. has ramped up its truck factory here to produce a new line of battery-powered trucks.

Heavy- and medium-duty trucks are one of the hottest segments of the electric vehicle industry today. Both legacy manufacturers and start-ups are scrambling to develop battery-powered machines. Vehicles are slowly starting to roll off assembly lines, but this new class of truck is expected to dominate the market within the next 15 years.

LONDON—Volta Trucks plans to produce Class 5-7 commercial vehicles in the United States.