 Complete the following phrase:  The 2016 Coates Hire V8 Supercars Challenge was a motor racing event for V8 Supercars, held on the weekend of 17 to 20 March 2016. The event was held at the Melbourne Grand Prix Circuit in Melbourne, Victoria, and consisted of one race of 60 kilometres in length and three races of 65 km in length. It was a non-championship event, contested by teams taking part in the 2016 International V8 Supercars Championship, and was held in support of the 