Supercars champion Chaz Mostert will defend his title with a new-look team following the departure of McLaren's Formula One boss Zak Brown from Walkinshaw Andretti United.
Brown's United Autosports will step away from the Ryan Walkinshaw-led Supercars outfit, less than a fortnight after Mostert broke through for a maiden championship in Adelaide.
The team will run as Walkinshaw TWG Racing, with American businessman Dan Towriss's TWG Motorsports purchasing United Autosport's shares.