A teenager who escaped jail after attacking a Croydon car with a "zombie knife" will be sent to jail three and a half years after his sentence is reviewed.
Joshua Gardner, 18, was captured in May with a highway cutter camera in Croydon, South London.
He was sentenced to an attempted heavy injury, attack, and possession of the offensive weapon originally convicted.
The police said he stopped by the side of his car by bike before the man tried to leave.
When the vehicle crashed into the opposite car, Gardner ran a big knife behind him before attempting to open the car door and smash the window on the driver's side.
Eventually, he managed to break the window with the passenger before he walked.
The footage of the incident, which was widely shared online, led to the identification and capture of Gardner.
Speaking outside the courtroom of the Royal Court after the hearing, Advocate General Robert Buckland said:
"I am very pleased that the Appeals Court today reflects the deep and growing public concern about knife crime.
"I think he sends a very clear message to people who choose to wear weapons of this nature that will not be tolerated."
He added: "Knives are weapons of wound and death and must not be transported by people without a legal permit."