http://www.fordvehicles.com/trucks/superduty/ Super Duty. Ram. Silverado. See who squeezes more out of two gallons of diesel.<br /><br /><br /><img src="http://ll.broadbandsports.com/images/38218_thumb.jpg" alt="2011 Super Duty - Challenge 1 | Fuel Efficiency" title="2011 Super Duty - Challenge 1 | Fuel Efficiency" width="150" height="90" alt="2011 Super Duty - Challenge 1 | Fuel Efficiency"/>
