Episode 501 - Volt Battery Workers Join UAW, CUVs #1 in U.S., Toyota R&D Questioned

Summary: Employees at GM’s plant that makes batteries for the Chevrolet Volt decided to join the United Auto Workers union. The CUV segment is the most popular in the American market for the second consecutive year. Ralph Nader questions R&D spending claims Toyota made in some of its advertisements. All that and more, plus a look at the design of the 2011 Kia Optima.