Ever since the Ford Taurus died its slow, painful death, Ford has been struggling to replace it with a competitive entry in the midsize-sedan arena, with little success. For a struggling domestic automaker, the midsize sedan market can mean huge sales and a path toward recovery -- should it get the formula right. With that in mind, the Blue Oval has released details of its all-new 2010 Ford Fusion -- a car that will go head-to-head with the best in the business from Toyota, Honda, and Chevrolet. The 2010 Fusion will feature the option of a six-speed manual transmission for four-cylinder versions, while the 6F35 six-speed automatic gearbox will be featured across the entire lineup as well. Ford says the six-speed auto optimizes fuel efficiency and power with carefully selected ratios, fast...