You asked, and Ford Motor Company answered: 70 percent of F-150 customers said better fuel economy is what they’d like improved most in their truck. And that they got – the 2011 Ford F-150 is projected to be the most fuel-efficient full-size pickup of any manufacturer, thanks to a projected 23 mpg highway (pending final EPA certification) with the new 3.7-liter engine. The new 5.0-liter V8 engine is projected to deliver 21 mpg highway, pending EPA certification.   “The all-new engine lineup for the 2011 Ford F-150 is focused on delivering what matters most to truck customers – best-in-class power, capability, durability and fuel economy,” said Barb Samardzich, vice president of Powertrain Engineering. “Each engine offers an unequaled combination of these attributes.”   The new 3.7-li...