Are Chinese EVs a national security risk?

Relatively cheap EVs from China are increasingly seen on Australian roads.  But you won’t find many in the US, because of hefty tariffs and bans due to national security concerns. Now Swedish based, but Chinese owned Polestar is set to stop selling in the US market from next year due to a crackdown on Chinese-linked vehicles.  Today, cyber security expert and former advisor to prime minister Malcolm Turnbull, Alastair MacGibbon on what the Chinese government could do to the cars if it really wanted to.  Featured:  Alastair MacGibbon, cyber security expert