( http://www.TFLcar.com ) In Europe the 2012 Buick Regal GS is known as either the Opel or Vauxhall Insignia and it can be had with a variety on engine choices. However in America in it comes with a 2.0L turbo. The brand new Hyundai Azera doesn't really compete with the Regal GS, but instead competes with bigger cars like the Toyota Avalon or perhaps the Buick LaCrosse. But that doesn't mean that we won't mash them up in this fun TFLcar Mile High 0-60 MPH mashup review