Another Buick is getting the Avenir treatment. The 2019 Regal will be the fourth Buick globally to receive the exclusive trim in less than a year. Buick says the Avenir trim is proving successful in other models, making up 20 percent of total Enclave sales in the United States, and selling 70 percent faster than other trim levels for the new LaCrosse. Buick’s first cloud-connected infotainment system also debuts on the Regal Avenir. The 2019 Buick Regal Avenir arrives at dealers this fall.