Wyrmwood: Road of the Dead.

Barry is a talented mechanic and family man whose life is torn apart on the eve of a zombie apocalypse. His sister, Brooke, is kidnapped by a sinister team of gas-mask wearing soldiers and experimented on by a psychotic doctor. While Brooke plans her escape Barry goes out on the road to find her and teams up with Benny, a fellow survivor – together they must arm themselves and prepare to battle their way through hordes of flesh-eating monsters in a harsh Australian bushland.