The UAW wants to organize Volkswagen’s plant in Tennessee but it won’t get help from German union IG Metall. One way Nissan is getting a best-in-class 38 MPG highway mileage in the new Altima is by gearing it way down with its CVT. Chrysler’s Super Bowl ad from last year, the one with rapper Eminem, just won the top award in the advertising business. All that and more, plus a look at the all-new Cadillac XTS.