A very clean Buick Regal police car, seen in the great city of Chengdu in Sichuan Province. The fourth generation Buick Regal was made in China by the Shanghai-GM joint venture from 1999 until 2009 when it was replaced by the new Opel Insigina-based Buick Regal. The 4th gen was a very popular executive car for business and government, earlier this month we met a special stretched limo based on the Regal.