Thursday March 04 2010DETROIT, March 4 — GM Vice Chairman Bob Lutz, an executive credited with bringing an urgency to the automaker’s efforts to revamp its vehicle line-up and shake off negative consumer perceptions, will retire on May 1, General Motors Co said yesterday. | GM Vice Chairman Lutz to retire on May 1DETROIT (Reuters) - GM Vice Chairman Bob Lutz, an executive credited with bringing an urgency to the automaker's efforts to revamp its vehicle line-up and shake off negative consumer perceptions, will retire on May 1, General Motors Co said on Wednesday. | Justices debate Chicago handgun banChicago's 28-year-old strict ban on handgun ownership appeared in trouble Tuesday at the U.S. Supreme Court in a potentially far-reaching case over the ability of state and local governments to enforce limits on weapons. |