Bankruptcies keep coming. In the four weeks ending Aug. 25, at least 21 transportation and logistics companies filed for Chapter 7 liquidation or Chapter 11 protection. The list stretches from one-truck operators in Illinois to a national distributor with hundreds of millions in assets and more than 100,000 creditors. Small carriers fold under equipment loans they can no longer service. Larger distributors wrestle with bloated inventories and ev…