Ex-vice chairman and Chevy Volt guru Bob Lutz had some, um, interesting things to say about the first ever woman CEO at GM. Also, strange confessions from a previous "Billy Jack" fan and on other "eco-heroes" from days gone by. Plus a few topical issues to keep you informed on what's up with natural gas vehicles.The Article Bob Lutz on Mary Barra, Goodbye to Billy Jack, and the ABCs of NGVs appeared first on Automotive Digest.