General Motors Vice President Global Design Ed Welburn unveils the Buick Avista concept Sunday, January 10, 2016 in Detroit, Michigan. The Avista concept 2+2 coupe sports a 400-horsepower twin-turbocharged V-6. Its uninterrupted body lines stretch front to rear, suggesting motion – resembling Buick’s design language introduced on the Avenir concept and carried into production on the 2017 LaCrosse. (Photo by Santa Fabio for Buick)