[VIDEO] Chief Keef Arrested ... AGIAN, this time for going 110 on the Freeway??

[The Core DJ's]

17-year-old Chief Keef was caught ON TAPE shattering the speed limit in Illinois this week -- allegedly doing 110mph in a 55mph zone -- and TMZ has dash cam footage of the subsequent police chase ... and arrest.

The video starts out pretty tame -- until out of nowhere, Keef barrels past the idling police cruiser in his BMW X6 M ... and the cops peel out after him. It takes roughly two minutes for officers to catch up to Keef and pull him over. 

"This a fast car, that's why I bought it" - he replied (as heard on the video) ... lol

As we reported, Keef was eventually arrested for speeding and having too many people in his car (he only has a driving permit). The arrest is also on tape.

But the best part -- wait 'til you hear the arresting officer's voice when he finds out Keef's got $8,000 CASH in his pocket ...