Last year, a total of 14,118 Regal sedans and TourX wagons were sold. By comparison, 93,000 Encores, 30,000 Envisions, and 50,000 Enclaves left dealership lots in 2018. This isn’t rocket science. It’s business, and the business case for Buick sedans (and a sporty wagon) is disappearing fast. And yes, this goes for sporty coupes, too. So no, a production version of 2016’s Avista concept is not even being discussed. Anyone who hoped for a reborn Grand National is better off buying a Camaro.