Briefly

General Motors introduced its new Lansing-built Cadillac CTS-V at the North American International Auto Show in Detroit. With a 640 hoursepower engine, the CTS-V has been called the most powerful Cadillac ever built. ... There is a new manager for GM´s Lansing operations. Mike Trevorrow, formerly executive director of the automaker´s Global Manufacturing Engineering Body Systems, replaces Tony Francavilla, who will be the company´s executive director of global supplier quality. ... Teachers and the East Lansing School District have agreed to a two-year contract, ending a six-month-plus impasse. ... The Michigan Supreme Court on Tuesday heard arguments on whether the state´s Civil Service Commission or state law governd state worker employment issues. ... The Lansing State Journal reported on a trove of Mastodon bones — 42 in all — excavated on a construction project in Bellevue Township last November. They will be donated to the University of Michigan Museum of Paleontology. … The Lansing School District Board of Education has reelected Peter Spadafore as president and elected Rachel Lewis as vice president, Myra Ford as secretary and Shirley Rodgers as treasurer.