School bus full of children skids down icy hill in dramatic footage

Vehicle knocks over postbox before sliding into a stationary car

A school bus with more than 20 students onboard slid down a hill after hit a flash freeze on the road in the small town of Sutton, Massachusetts.

An onlooker filmed the vehicle as it knocked over a postbox and slid into a stationary car.

It is not thought anyone was hurt in the incident.