Production of Airslide cars began in 1954 and the Q acquired its first 100 of the 2,600 cubic-foot cars from General American in December of that year: Class LO-1's 87000 - 87099.. The cars were anything but colorful, with gray bodies, black plain bearing trucks, black lettering, and small black and white heralds on the car side between posts. The "Everywhere West" slogan appeared on both sides. Another 100 nearly identical cars ( but riding on No. 93 roller bearing A-3 Ride Control trucks ) came in 1955, numbered 87100 - 87199 and classed LO-1A. These first 200 Airslides ( generally used for flour loading ) featured outside posts which were open at the bottom. Vibrator castings, welded to the car sides, two per side, are characteristics of Airslides. These cars were built at GATC's East Chicago plant, and eventually were renumbered into the BN 400500 - 400699 number series.