Chevrolet's midsize passenger car lineup has earned a greater percentage increase of sales and market share than its major competitors for the year 2000 through August. The Chevy lineup -- including Impala, Monte Carlo and Malibu -- has posted combined sales (351,831) for the period that have increased 14.4 percent from the year-ago timespan. Additionally, Chevy's share of the midsize car market, the auto industry's largest vehicle segment, has increased 1.4 percentage points.