Yeah right!
Apart from that you'd have to be living in a fantasy world. A really weird, nightmarish, dystopian fantasy world! Someone being anxious of some constant observation doesn't make them a bad person or driver.
I'm also curious about why you think that people being able to remain courteous for a two week window (which is a pretty arbitrary timeframe, how many hours per day I wonder?) means they won't become yet another 'perfect' idiot when the cameras are removed? I fail to see how it would improve the standard of driving at all TBH - I think most people are capable of being decent drivers anyway, they often just get complacent or assume they're doing everything perfectly while being a complete idiot to everyone else on the roads.