A cyclist wielding a huge ‘zombie’ knife tried to smash a motorist’s window during a terrifying rush hour road rage row in front of stunned London commuters. Dashcam footage captures the horrifying moment the young man sprinted after a Volkswagen Polo on a busy high street in Croydon before trying to break through the driver’s side window in a frenzied attack. The chilling attack comes amid a knife crime epidemic in London that has so far claimed 43 lives this year.