DETROIT – With an estimated 255 turbocharged horsepower (190 kW), a six-speed manual transmission and an advanced, adaptive all-wheel-drive system, the Buick Regal GS show car is a high-tech ...

Along with a long list of Chevy products set to debut at the Detroit Auto Show, GM will deliver unconventional new vehicles for both Buick and GMC. First up is a high-performance Buick Regal ...