Support WBURU.S. Automakers Are On A Roll, But Hiring Is Slow And SteadyPlay03:37Download AudioSonari GlintonJune 19, 2013 ShareA worker installs parts on a Chrysler SUV engine at the Jefferson North Assembly Plant in Detroit. Plants in the U.S. are now operating above 90 percent capacity, but automakers are wary of adding large numbers of new workers. (AFP/Getty Images)