Austin Weber

CARLSBAD, CA—Aptera Motors Corp. has begun limited production for solar-powered electric vehicles at its factory here.

HANNOVER, Germany—New Holland has unveiled an autonomous tractor here that is designed to help orchard and vineyard owners address severe labor shortages.

They focused on gyroid infill, an intricate, repeating internal structure commonly employed in additive manufacturing to minimize weight while preserving structural integrity.

ELLABELL, GA—The new Hyundai Mobility Training Center here features state-of-the-art classrooms and assembly lines.

UNIVERSITY PARK, PA—Engineers at Pennsylvania State University have developed an all-climate battery.

DAYTON, OH—Joby Aviation Inc. has begun to manufacture air taxi propellor blades at its factory here.

The biggest transformation in the aerospace industry since the dawn of the jet age 75 years ago is being driven by next-generation propulsion systems and other technological advancements.

ARNSTADT, Germany—Engineers at the Fraunhofer Institute for Ceramic Technologies and Systems are developing a sodium-ion battery that uses lignin, a by-product of the wood and pulp industry, as an electrode.

For decades, Chrysler was synonymous with innovation, pioneering automatic transmissions, hydraulic four-wheel brakes, streamlined bodies, supercharged engines and turbine power trains.

FRANKFURT— More factories are installing robots to improve productivity, boost quality and address severe labor shortages.