August 1969: Trail-A-Sled employees Ronald Chirstenson (left) and Roger Johnson at work in the Rubber Drives, Inc. facility where several rubber-product presses are operated. The press pictured here turns out 160 parts every 15 minutes. Rubber Drives also produces a patented molded rubber track for Scorpion as well as 15 varieties for other manufacturers. Brainerd Dispatch. See Terms of use. Link to Home.