Detroit, Michigan – General Motors has announced an array of all-new cars, crossovers and trucks debuting now through 2011, including an entry-level Cadillac and a Buick plug-in hybrid.

The announcement was made at a special Product & Technology preview at the company’s Milford Proving Ground and Design Center in Michigan, with a preview of six all-new 2010 vehicles and a glimpse of upcoming designs.

GM president and CEO Fritz Henderson confirmed that Cadillac is developing an entry luxury sport sedan to capitalize on the growing market for smaller luxury sedans in the U.S. and globally. Available in rear- or all-wheel drive, the new sedan will slot below the Cadillac CTS.

Chevrolet will introduce ten new models, including the 2011 Volt; Buick and GMC will add ten new entries, including the Buick plug-in hybrid compact crossover in 2011; and Cadillac will introduce five new models through 2011.

Henderson also announced that as part of GM’s commitment to get closer to consumers, it will use its FastLane blog to gather product research from fans and critics, and he and other executives will talk with consumers in other Web-based and in-person formats in the coming months. A “Tell Fritz” feedback feature can be found at GM Reinvention, while the FastLane blog will launch “The Lab,” a micro-site featuring future projects by GM’s Advanced Design team.

Connect with Autos.ca