By Liz White, UT staffChicago, Illinois-New Cadillac and Buick models unveiled 9 Feb at the Detroit Motor Show have complete interiors designed by Lear Corp. for General Motors Corp. Lear says this is, "the first ever example" of such GM-supplier collaboration for a complete interior. Lear was given total interior responsibility for joint design, sourcing and engineering-with GM-of the interiors for these 2006-model luxury cars. Innovations in the DTS and Lucerne feature a number of Lear developments, including its Spray PUR, a seamless polyurethane coating for the instrument panels and its Flexible Seating Architecture (LFSA). Spray PUR technology "provides best-in-class grain and gloss performance for instrument panels and eliminates the visual seams for air bag compartments," said Lear. In addition, the LFSA gives major benefits in cost savings-achieved by using a common seat architecture across multiple platforms as opposed to the traditional approach of designing separate seat structures for each vehicle.In the picture is the interior of the new Cadillac, with its luxury leather seats and spray-polyurethane interior trim. "