Stellantis may be looking to adapt planetary gear hybrid systems—like the one currently used in the Chrysler Pacifica Hybrid plug-in hybrid minivan—to more rugged vehicles, a patent filing indicates.

For folks with high horsepower street cars, the allure of a "clutchless" manual Lenco gearbox—and the cool-looking lightning-rod shifters—is pretty clear, but historically, the cost has been ...