Reuters: For years the Windsor Tool & Die factory, a stone’s throw from the U.S.-Canada border, stood vacant, a testament to the breakdown of North America’s auto industry. But last summer a group of former auto workers in Windsor, Ontario, a one-time Canadian car-making mecca just across the river from Detroit, rolled up their sleeves to scrape off the plant’s decades of grime. The aim wasn’t to revive production of the auto machining parts the shop was once known for. Instead it got a new lease of…