OUR COVER STORY ponders the reinvention of Buick, a once-iconic American brand, in the aftermath of the most tumultuous year in Motor Trend’s 60-year history; a year during which both GM and Chrysler declared bankruptcy and which marked the end of the road for Pontiac, Saturn, and possibly Hummer. Back when Motor Trend was launched in September 1949, there were 10 major U.S. automakers building and selling cars and light trucks under 21 different brand names. Sixty years later, we have three automakers—two of which are still in intensive care—building and selling 11 brands. And during those six tumultuous decades of mergers and bankruptcies another 11 automotive brands have come and gone. Among those that didn’t make it: Allstate, AMC, Checker, Crosley, DeSoto, Eagle, Edsel, Frazer, Henry J, Hudson, International,…