The 2011 North American International Auto Show is underway in Detroit this week, and the publicity seems to be all positive. The event will showcase 40 new vehicles manufactured by companies from around the world. I’m not interested in buying a new car, but I enjoy seeing the fancy new cars and eco-friendly smaller cars. Automakers are expecting to sell about 12% more cars and light trucks in 2011 compared to a solid year in 2010. There will be many new hybrid and electric vehicles and sedans, crossovers, and SUVs with more fuel-efficient combustion engines, including several new models...