beams. The 1994 Buick Regal and Oldsmobile Cutlass had hydro-formed instrument panel beams. The first mass-produced automotive component was in 1990 with the instrument panel support beam for the Chrysler minivan. Various vehicle bodies and body components, the earliest mass-produced one being the 1997 Chevrolet Corvette. A selection from many examples are the current versions of the three major United States pickup trucks—the Ford F-150, Chevrolet Silverado, and Ram—which all have hydroformed frame rails, 2006 Pontiac Solstice and the steel frame inside the John Deere HPX Gator Utility Vehicle. The process has recently become popular for the manufacture of aluminium wheelchair frames and wheelchair hand rims, making wheelchair more rigid and lightweight and hand rims more ergonomic. See also Blow molding, for thermoplastics References Metal forming