Looking to capitalize on a wave of strong sales in the last year, Buick on Tuesday unveiled a pair of updated sedans at the N.Y. Auto Show. The refreshed midsize Regal and the larger LaCrosse each are hoped to increase the automaker's momentum. Buick has been on a bit of tear lately, with 10 consecutive months of increasing sales and 2012 ranking as the best sales year since 2006. The changes to each front-wheel-drive car are moderate, but important. The 2014 Regal, which is sold in Europe as the Opel Insignia, gets minor exterior updates including LED daytime lamps and LED taillights. Photos: Buick at the 2013 N.Y. Auto Show The interior gets a more thorough change, the highlight of which is a new 4.2-inch color display in the instrument panel, and a revised center console with fewer buttons and less clutter, Buick says. Photos: Highlights of the 2013 N.Y. Auto Show The Regal's base drivetrain remains Regal eAssist, a mild hybrid system. It uses a direct-injected 2.4-lite