According to General Motors, the Regal GS is officially the fastest Buick ever made. The sedan's lead development engineer, Bill Rietow, and powertrain drive quality engineer, John Townsend, did their part to support the assertion when they ran the Regal GS in the Nevada Open Road Challenge. The event isn't about all-out speed, but about a driver finishing the course in a pre-set time. It has speed-limited and wide-open sections, and during one flat-out phase the Regal GS hit 162 miles per hour.
Silver State Classic Challenge