Was on the m40 southbound heading towards coventry, Person was in the fast lane no one in the middle lane, Driver then went on to slam on his breakswhile in the fast lane for no reason no one in front, Then Slowed down and slammed on there breaks again. then the driver moved over in to middle lane, As i went to over take the driver then went on to swerve to the side of my car. Be carefull when getting close as this driver is driving dangerously..
