Buick reveals a teaser shot of their all-new crossover just a few weeks ahead of its official Detroit debut.Just a few weeks ahead of this year\'s Detroit Auto Show, Buick has just released this first official teaser shot of their upcoming all-new crossover. Called the Encore, it will be smaller than the existing Enclave and will be dubbed a 2013 model.We\'ve already seen an early preview of it from the Envision crossover concept shown at last April\'s Shanghai Motor Show and judging by that, it looks like Buick will have yet another winner.Obviously showing part of the front grill and headlights, Buick is continuing on with their signature waterfall front-end styling.At the moment, Buick is keeping mum on specifics, but the automaker claims the Encore \"will offer contemporary styling, signature, QuietTuning technology, and a host of features and amenities customers expect from Buicks today.\"Sounds interesting enough, but we\'ll have to wait until January 10th for the full reveal.