Environmental Working Group's Karpf says auto warranties won't cover E15

What impact could a higher ethanol blend in gasoline have on vehicles? During today's OnPoint, Sheila Karpf, legislative analyst at the Environmental Working Group, discusses new research on vehicle warranties for cars using E15. Karpf says many manufacturers will void vehicle warranties if engines are damaged due to E15 use. She also explains how the government and automakers can better educate consumers on ethanol blends.