BrightDrop electric delivery vans (above) as well as Chevrolet Silverado/GMC Sierra pickups from General Motors Co. feature North America’s first composite tension leaf springs (TLS) with progressive ...

Rassini’s 1+C Hybrid leaf spring features a single steel parabolic main plate and a flat glass fiber composite helper plate to provide suspension on the rear wheels of the Ford F-150 pickup truck.

Leaf springs were a hot new technology several years ago, and by "several years," we mean the Bronze Age. Vehicles have evolved somewhat since the chariot, what with trotting and biting horses being ...