Its only clean because the cleaners work overtime... I can be in the city at 4am after a movie and i see cleaners around clearing the trash..
People do litter, ciggie butts and stuff can get you a fine, minimum $200, but its hardly enforced nowadays. And the corrective work order penalty that seemed to be so effective a decade or so ago, has pretty much been scrapped. I dont know the details, but nobody sees it happening anymore.
But i'm all for limiting the cars speed to 115km/h, thats a pretty good idea, but of course its not going to sit to well with the general public. People generally dont like to have any amount of limitations put on them. And unless the whole limiter thing is going to be sponsored, nobody will voluntarily go for it.
Once again, making it compulsory for cars to be limited otherwise face a huge fine or something would be cool. Taking cars away is too drastic i reckon, thats akin to a minimum 10 grand fine, kinda harsh don't you think?