The First Impala Ever In 1958, General Motors celebrated their 50th anniversary by completely redesigning their flagship brand, Chevrolet. Using the ad slogan of “All New, All Over Again”, Chevrolet was able to regain their #1 sales position from Ford. As part of this new styling, Chevrolet introduced the Impala. Named for the sleek African antelope, the Impala was longer (207"), lower (only 57" high) and wider (77.7") than anything in its class. Despite being a Limited Edition and the top of the line at $2844, over 55,000 Impalas were sold.