Call it a souped-up auto flash mob, but here's yet more footage of the sideshow that briefly shut down the northbound lanes of I-880 in Oakland in the middle of Saturday afternoon, shot via a car on the southbound side.

The CHP is investigating, based on all the video evidence, and it's unclear how long the stunts took before traffic was allowed to proceed. They're hoping some witnesses will come forward to tattle.

As most of you probably know, 880 is a busy, semi-dangerous freeway at all hours of the day, so seeing it empty like this is kind of surreal.


Previously: Video: Damn Fools Doing Donuts On 880 In Oakland [UPDATED]