Fog and heavy traffic causes emergency services delays following six-vehicle smash on HB Expressway 14 Mar, 2021 07:36 PM 4 minutes to read One person seriously injured and two moderately during six-vehicle pile-up on Hawke's Bay Expressway. Photo / Supplied One person seriously injured and two moderately during six-vehicle pile-up on Hawke's Bay Expressway. Photo / Supplied Emergency services struggled to get to the injured after a six-vehicle pile-up on a wire-barriered section of the Hawke's Bay Expressway in peak-hour traffic. Six people were injured – one seriously and five moderately – during the crash in foggy conditions near Greenmeadows about 8.17am Monday. A dashcam video from another driver on State Highway 2 at the time showed a concrete truck crashing into the back of a car with significant force, shunting it into a ute in front.