I don't think I've ever seen Central London quieter. Even in the middle of the night you get more traffic than I saw today, the first day of operation of the Oympics 'Zil' lanes.
It's quite interesting to see the bizarre treatment given to CSH#8.
Now, we know that there are a lot of people avoiding driving in Central London because of the Olympics. But if journeys are really necessary, people presumably still have to drive. You can't deliver goods or fix boilers without a van. Maybe some of these essential journeys are being put off, but even allowing for all that, there was still a very small amount of traffic compared to normal, considering we're always being told about the absolute imperative of maximizing traffic flow. Maybe we're being kidded about the number of essential motor journeys in London?