a section of Belgian pavé and a hill circuit with gradients up to 30%. Arjeplog Opel operates a winter climate proving ground near Arjeplog, Sweden. Most of the tracks are on the lake ice. Arjeplog has an average temperature of in January. Australia Lang Lang Proving Ground The Lang Lang Proving Ground is a vehicle testing facility located at Lang Lang, Victoria, Australia, approximately south-east of Melbourne. It was opened in 1957 by Holden on a site off the Bass Highway. It was used to test every Holden model from the Holden FC onwards. It is a dedicated 877-hectare site with of road systems, including a 4 lane circular track (speed bowl), and handling course, a noise road and diameter skid pan. It is also equipped with an Emissions Laboratory and Safety Test Facility with crash barrier and HYGE sled. In February 2020 GM announced the test track and design centre would close with all jobs being redundant to reflect the GM decision to quit global right hand drive vehicle production. In September 2020, it was sold to VinFast. It will continue to be used by GM Specialty Vehicles. In October 2021, VinFast disbanded its local engineering operations and put the Lang Lang Proving Ground test track up for sale. Its official website is llpg.com.au Asia Guangde County, Anhui, China Shanghai GM (SGM) and Pan Asia Technical Automotive Center (PATAC), both joint-ventures of SAIC Motor with GM China, opened in September 2012 China's largest proving ground in Guangde County, Anhui, China. Proposed / Closed Proving Grounds Facilities Mezcala Proving Ground GM's proposed facility at Mezcala, Mexico was terminated in the planning phase due to breakdown in land negotiations. The facility was to take over Desert Proving Ground tasks when GM announced DPG's closing in 2000. DPG is still operating as of late 2008. Soon to be closed and replaced with the new facility in Yuma, Arizona. Desert (Mesa) Proving Ground GM Desert Proving Ground in Mesa, Arizona, USA was a General Motors facility for the testing of HVAC, propulsion, and various automotive systems in a harsh climate. Opened in 1953, the closure of this facility was completed in 2009. It was replaced by a new facility in Yuma, Arizona, known as the Desert Proving Ground Yuma. See also Nardò Ring Ehra-Lessien (Volkswagen) Fiorano Circuit (Ferrari) Ford Proving Grounds Mazda Proving Grounds Nissan Proving Grounds References External links Opel Test Center