cars of the
Chicago, Milwaukee, St. Paul & Pacific Railroad, displaying their distinctive glassed-in observation areas ( 1948-1955) (with aftermarket mag style wheels) Stevens is credited with styling the late 1940s Modern Hygiene cannister vacuum cleaners, and designed
Harley-Davidson motorcycles including the 1949
Hydra-Glide Harley, one of his first, helping create the new suspension forks in the front, bucket headlight, and the streamlined design. All Harleys since, including models in production now, are based on Stevens's body designs. His designs in home and kitchen appliances were popular, and he is recognized as the originator of the robin's-egg-blue phase of 1950s kitchen appliances, as well as the iconic
Skylark laminate design popularized by Formica. He also practiced architectural design and graphic design. Of note is his design of the
Miller Brewing logo and he is also credited with convincing the company to switch from traditional brown bottles to clear bottles. As an automobile designer round about 1954 Stevens shaped the
Die Valkyrie based on the
Cadillac Eldorado of the same year. The car had a V-shaped bumper. He redesigned the 1962
Studebaker Gran Turismo Hawk on a minuscule budget. The fast, elegant GT remained until the end of American production. According to Hendry, Stevens also styled "three innovative products for family car use for the 1964-66 period" (which were never manufactured). He designed engines for
Briggs & Stratton. He also designed the university logo for the
Milwaukee School of Engineering (MSOE) in 1978 as a part of "The Diamond Jubilee" celebration. The logo remains in use today. Stevens designed the post-war
Skytop Lounge observation cars for the
Chicago, Milwaukee, St. Paul & Pacific Railroad's
Hiawatha passenger trains. He also designed a series of
Excalibur sport cars for Studebaker. Originally intended as a halo car for Studebaker. Studebaker opted out of the program in December 1963 after shuttering US car production. Stevens continued development of the Excalibur and would introduce the car at the New York Auto show in April 1964. In the mid-1960s he and his sons began production of the retro-styled Excalibur, modeled on the 1920s-era
Mercedes-Benz SSK roadsters. Stevens modernized the Aero-Willys sedans that were offered in Brazil in the 1960s, and there is a very Studebaker Hawk-ish look to the body of these cars. Stevens's design contributions to the recreational boating industry included collaborations with
Outboard Marine Corp. to style the
Evinrude Lark and Johnson Javelin outboard motor series. He also designed the Evinrude Lark concept boat, eventually produced as the Cadillac Sea Lark. Together with Bob Hammond's 1956 Lone Star Meteor, these designs may be credited with introducing post-world war automotive styling to leisure craft. Other work in the marine industry include designs for Owens Yacht Company and Cutter Boats as well as a line of stainless steel marine hardware for the
Vollrath Company. Stevens is credited with restyling the front end of the
Volkswagen 411, marketed as the
412. ==Planned obsolescence==