Butamax's Beckwith says butanol can help refiners push through blend wall

How viable is biobutanol as a replacement fuel to ethanol? During today's OnPoint, Paul Beckwith, CEO of Butamax Advanced Biofuels, discusses his company's joint venture between BP and DuPont to develop and commercialize biobutanol. Beckwith talks about efforts to retrofit ethanol facilities to produce biobutanol, and he also responds to the safety and efficiency concerns associated with the fuel.