Auto factory workers returned to assembly lines in Michigan on Monday.<br />The return of America's autoworkers paves the way to reopen the U.S. auto sector, but employees are fearful.<br />The workers, along with a large portion of the country fear a second wave of deadly coronavirus infections.<br />The concern comes as strict lockdowns are eased across the country, without any known treatment or cure for COVID-19.<br />Michigan has over 47,500 confirmed cases with 4584 deaths due to COVID-19.