With speed and precision, the workers at Toyota Motor Manufacturing Alabama (TMMAL) in Huntsville assemble engines for several of the brand’s cars and trucks, like the Camry, RAV4, Highlander, Venza, Tacoma, Tundra and Sequoia. From 2003 to February 2014, the workers produced 3 million engines. But thanks to several multimillion-dollar expansions by TMMAL to increase…