Two guys in a van started an argument with a biker behind us at a red light on w broad st. When it was green light, the van recklessly sped and swerved dangerously around other drivers like they were in a rush. When we hit another red light, argument between drivers and biker continued. Driver then swerved intentionally to other lane and try to hit biker, was very close to hitting and also hitting other cars on road, ended up throwing a cigarette at biker in frustration. Luckily biker was able to bike away and not get hit by van. Driver continued to speed and swerve dangerously close infront of other drivers. Super aggressive and reckless driving to others on the road, had to report.