The fuel economy and durability of hybrid versions of Ford Fusion and Escape, Mercury Milan and Mariner also are winning over large numbers of conquest customers, many of whom are previous import owners. Through September, Ford has sold 26,016 hybrid vehicles, up 73 percent versus the same period in 2008, according to figures from Autodata Inc.

At 9:08 a.m. this morning, the 2010 Ford Fusion Hybrid team hit the 1,000-mile mark on a single tank of gas, and is continuing its ultimate fuel-efficiency challenge with nearly one-third of a tank of fuel remaining.