For its president, the American Trucking Associations likes to pick a trucker whose business is a model in the trade. Last year it picked a trucker who seemed to fit all the qualifications: Birmingham's John B. Cole Jr., 44. A onetime freight-commission salesman, Jack Cole bought his first truck 20 years ago, built up a fleet of 195 diesel tractors and 285 trailers, a staff of 400 drivers, mechanics and clerks, and a ten-city chain of terminals. But last week Cole's business was anything but a model. In a pay dispute with his drivers, his $6,000,000-a-year business was closed.
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