A 10-year-old boy managed to avert a tragedy yesterday after his nana passed out at the wheel of her car on State Highway 1.
Ryan and his nana Kathie were driving north between Meremere and Mercer just before 10.30am when she experienced a medical emergency.
He realised Kathie was slipping into a semi-conscious state, according to Counties Manukau Police.
"He soon swung into action and stepped over the centre console to step on the brake," police said in a post to social media.