Features GM reports Q2 increase in new vehicle sales, but inventory still tight The second quarter was the best of times and the worst of times for General Motors as the automaker reported a nearly 40% boost in new-vehicle sales but still struggled with tight inventory. Jul. 3 2021 @ 5:20pm The 2021 Escalade returned Cadillac to the front ranks of global luxury and stayed true to the brand's heritage of combining power, style and room. (Cadillac/TNS) The second quarter was the best of times and the worst of times for General Motors as the automaker reported a nearly 40% boost in new-vehicle sales but still struggled with tight inventory.