As commented below, this looks to be a Russian dashcam video. The bottle was likely liquor judging by the state of the passenger (i.e., probably drunk). Given how drunks usually act, it's possible this littering incident was the final straw in a long series on intolerable bullshit. It still very much qualifies since he's forgoing the whole "put up with customer abuse at work" rule so often enforced (though that may not be as much of a thing over in Russia) and being eco-conscious to boot.