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"Washington Park Run. The Washington Park Run goes through the forests of Washington Park to a station above the International Rose Test Gardens and back to the zoo. Round trip is 4 miles long and takes 35 minutes. The Zooliner. This diesel-powered streamliner was built in 1958. A replica of General Motors 'Aerotrain,' the engines 165 horsepower is transmitted to eight driving wheels through a hydraulic-type torque converter transmission and spiral gears. Safety features include a 'dead man control' to ease the train to a halt in an emergency. A governor holds the train to a 12 mile per hour maximum. A conventional automatic air brake system provides safe train handling."
North America
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