A cyclist on Monday stabbed a commuter in the United Kingdom with a giant blade through his car window in what appeared like a horrifying movie flick.

Dash-cam footage shows the knife-wielding man dismounted from his bike along a busy road in the Alum Rock area of Birmingham and produced the weapon from up his sleeve on April 4.

He then pushed the blade through the open car window while the vehicle waits in traffic and stabbed the commuter at the passenger seat.

The man, who is wearing a black hoodie and tracksuit bottoms, then picks his bicycle up and casually rides away from the scene while the car disappears into the distance.

The cyclist, who wore a black hoodie and tracksuit bottoms, rode along a road in the Alum Rock area of Birmingham.

The driver immediately tried to swerve around the other cars to escape as the suspect picked up his bike and rode away from the scene.

MailOnline has contacted West Midlands Police for comment.

Footage of the incident was uploaded by the website Birmz is Grime, where it has since been viewed thousands of times by horrified web users.

The scenes come just months after a 19-year-old was left fighting for his life after he was ‘chased down the road by a group of men’ and repeatedly stabbed in Alum Rock, Birmingham on February 9.

Emergency teams were called to the scene after the victim suffered multiple stab wounds.

The teenager was rushed to hospital and underwent emergency surgery, police later said in a statement.

The motive for the attack is unclear and police inquiries are ongoing to establish what happened before and after the teenager was stabbed.