business in 1993. Lionel MPC (1970–1986) In 1970, after tooling purchased from the Lionel Corporation was moved to a new factory in Mt. Clemens, Michigan, limited production of Lionel trains as a new product line under MPC began. Rolling stock debuted with "fast-angle wheels" with needlepoint bearings. This new wheel design, coupled with the use of Delrin plastic trucks, reduced rolling friction that allowed for longer trains to be run and is still in use by Lionel today. Lionel also began to offer trains in a wider variety of road names and colors and with improved graphics that were not previously available during the postwar period. In 1971, Lionel debuted a new electronic sound system in their engines, called "Mighty Sound of Steam," to replace the electro-mechanical air whistles of the pre-war and post-war eras. An internal reorganization in 1973 caused Lionel to become part of General Mills' Fundimensions group, and a new line of scale-sized freight cars, called "Standard O", was introduced that same year. The new line of trains included the Blue Streak Freight, an entry-level O-27 gauge train set produced by Lionel. The set included a blue Jersey Central Lines steam locomotive with a 2-4-2 wheel configuration and attached tender car. Lionel integrated several features into the locomotive, including a working headlight and a smoke unit. In 1974, Lionel began to offer trains in HO scale for the first time since the postwar period, where they were last cataloged in 1966. In 1975, Lionel introduced a 75th anniversary freight set that consisted of their U36B diesel engine and rolling stock that included images of catalog covers and logos from Lionel's past. One year later, Lionel released a model of the American Freedom Train to celebrate the nation's bicentennial. The brand rose to prominence in 1976 following a series of television commercials featuring Johnny Cash, himself a Lionel collector. In 1979, Lionel re-issued the Fairbanks-Morse Train Master diesel locomotive and re-introduced the American Flyer S gauge line of trains, both of which had not been produced since 1966. Starting in the 1980s, Lionel began to issue more postwar-derived operating accessories, such as the Lumber Mill, Ice Depot, and News Stand. In 1984, they released the 783 Hudson locomotive, which descended from the 773 scale-sized Hudson originally made in 1950 and again in the 1960s. Lionel, LLC (1986–present) In 1985, General Mills spun off its Kenner-Parker division, with Lionel