A female motorist narrowly avoided causing a massive pile-up on the A11 and A14 this weekend after she drove almost ten miles at 50mph on the wrong side of the road.
Passenger Tom Hind, 40, filmed the footage on his camera as terrified drivers swerved to avoid a head-on collision with the woman in a red Citroen.
Police said they were inundated with phone calls from panicked drivers but eventually stopped the Citroen via a rolling roadblock near Exning.
Mr Hind, a piano technician from Hornchurch, East London, told The Telegraph: "I saw someone driving the wrong way and it took me a minute to process what was actually happening.
"It was quite startling and I immediately called the police and they said they'd been inundated will calls from people telling them someone was driving the wrong way at speed.
"I took out my camera to film it and you can actually see cars flashing their lights to try and get the driver to stop.
"They must have been going for about 10 or 15 miles it's an absolute miracle that no-one was hurt.
"I could see cars pulling out of the way as the driver was on the outside lane."
A spokesperson for the force added: "She was spoken to by officers but was taken home and will not face any charges."