Almost 50,00 US auto workers went on strike Monday in a pay dispute with General Motors, the largest industrial action to hit the car-maker in more than a decade. More than 46,000 workers from 31 plants opted to walk out after talks between the company and the United Auto Workers Union hit an impasse as they tried to negotiate a replacement agreement when the manufacturer’s four-year contract with workers expired. “The strike can take a little while longer,” Brian Rothenberg, a spokesman for the powerful union, told AFP.