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Trucker Shortage in Canada Hurting Supply Chain, Cost of Goods -
Empty Store Shelves, Shortages Expected to Worsen Nationwide -
Self-Driving Truck Completes Successful Run in Arizona -
States Face Shortage of Snowplow Drivers as Winter Storms Approach -
Driver and Supply Chain Issues Test Transport Industry Amid Pandemic -
Gas Prices Surge to 7-Year High Ahead of Independence Day Weekend