Question: The T-Type is a series of Buick automobiles that were popular during the 1980s, this marketing approach for Buick products, was a revival of a similar approach used in the 1960s (and later revived in the 1990s) with which vehicle designation, this name has been used on several high-performance cars built by Buick since 1965?
Related documents: [0]  [DOC] The Gran Sport name has been used on several high-performance cars built by Buick since 1965. In the GM brands hierarchy, Buick was surpassed in luxury and comfort appointments only by Cadillac, which did not produce performance models. As a result, the Buick GS series were the most opulently equipped GM sport models of their era. [END] 
[1]  [DOC] The T-Type is a series of Buick automobiles that were popular during the 1980s. This marketing approach for Buick products was a revival of a similar approach used in the 1960s (and later revived in the 1990s) with the Buick GS designation. [END] 
Answer: 
Buick GS
Buick GS