Motorway driver smashes into the back of another car

This is the horror moment a driver smashes into the back of another car on a motorway - almost causing a high-speed pile up.

Filmed on a lorry driver’s dash cam the heart-stopping footage shows a car back end of another car which had come to a complete standstill in the middle of the road.

The collision, at junction 17 of the M25 motorway, causes both cars to spin out of control as glass and debris is sprawled across the carriageway.