The moment a 150km/h gust of wind knocks over a campervan with a holidaying family inside has been captured in terrifying dashcam footage. The fully-loaded vehicle was blown over on New Zealand's Mount Cook Road, which leads deep into the southern alps and the country's tallest mountain, Aoraki, at 2pm on Sunday. A sedan traveling closely behind had to swerve off the road to avoid being hit by the sliding camper. Lanes in both directions were blocked, and the family members trapped inside the were miraculously uninjured. The road was closed between Lake Pukaki and Aoraki/Mt Cook after the crash.