The 2013 Ford Fusion was without a doubt one of the stars of this year's Detroit show. What does it say about the auto industry that a vehicle as humdrum as a Ford Fusion was the star of the most important North American car show? We're still chewing on that. But here's what impresses us about the Fusion: First, it is an attractive, completely attainable Ford product designed to compete with entry-level luxury sedans that are $10,000 more expensive. Second, it will be available with a variety of powertrains, including a hybrid and plug-in hybrid option. By quietly electrifying mainstream vehicles like the Fusion÷offering a plug-in option just as it would, say, a more expensive gas engine÷Ford will keep the cost of alternative powertrains down and help mainstream clean-car technologies that were, just a few years ago, unthinkably exotic.