V8 Supercars has formally concluded its agreement with the Circuit of the Americas in Austin , Texas .
Chief Executive Officer James Warburton is confident there will be international races for V8 Supercars in 2016 and beyond .
V8 Supercars has formally concluded its agreement with the Circuit of the Americas in Austin , Texas , but Chief Executive Officer James Warburton is confident there will be international races for V8 Supercars in 2016 and beyond .