Greenville,SC,USA -The Economist (UK) - February 22, 2011: -- BMI designed UnderTray to help big-rigs improve fuel efficiency. Wind-deflecting devices make tractor-trailer more aerodynamically efficient. Help reduce low-pressure area behind trailer... Company says UnderTray can improve big-rig mileage by up to 12%. At current prices would save big-rig owners around $5B... Officials say UnderTray would pay for itself in 12-18 months of use...
