Vail autos: Denver <b>Auto</b> <b>Show</b> has some light in the tunnel

While the past few years of Denver Auto Shows have been increasingly grim affairs, this year's event might demonstrate a slightly more upbeat mood in the car business. Last year's unpleasant economy helped bring some long overdue changes to both the domestic and import auto world. And nowhere are those changes more evident than at the General Motors displays. As company officials noted during ...