A van driver launched a vicious attack on a fellow motorist after he was cut up on the M5 during rush hour.
Striking as traffic comes to a halt, the men trade blows near Junction at Junction 9 at Wednesbury, in Staffordshire, in dashcam footage captured by shocked motorists caught up in the congestion.
The clash broke out when the van driver had to slam on his breaks after a Volkswagen people carrier recklessly cut in front, enraging him in the process.