Opel Insignia OPC Unlimited Tops Out At 168 MPH!
General Motors European division Opel seems to be playing on the autobahn recently, because they have just unveiled a new version of the Insignia family car (sold as the Buick Regal here in America) called the OPC Unlimited. While it retains the regular OPC model’s 325-hp engine, the “unlimited” package removes the speed limiter. So...