Dev Patel does a mean Australian accent in new trailer for 'Lion'

The Australian accent is difficult to master, and attempts to handle it by international actors have been pretty ham-fisted. We mean famously ham-fisted.
So when British actor Dev Patel, from Slumdog Millionaire and TV series Skins, nails the Aussie accent with relative ease? That's something worth taking notice of. 
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Patel plays Indian Australian businessman Saroo Brierley in an upcoming film called Lion, who travels