The 2010 Ford Taurus is barely into its launch, but plans are already being laid for the next-gen model. In what should be a surprise to no one, the next Taurus is expected to be smaller than the current car. According to The Detroit News, Ford is likely to move Taurus to a common platform shared with the Fusion and Mondeo.
The combining of the Fusion and Mondeo has been planned for some time already and the Taurus will probably use a longer (and perhaps wider) variant of the same C/D segment architecture. The current Taurus platform will still be around for at least four more years and it'll also underpin the new Explorer that's expected to bow in 2010.
Similar plans are believed to be underway at General Motors for the Chevy Impala, whose next iteration will probably move to a stretched version of the Epsilon II platform along with the Buick LaCrosse and the next Malibu.