The G-Wiz is becoming a fairly regular sighting in London, as they are congestion charge exempt. They are still a tiny proportion of traffic, but making their presence felt. The original Smart car was more common, but it is good to see a new generation of small cars being used in town, proving that you do not need a huge 4wd or executive barge saloon to get one person slowly around town. I do my part in my Trojan!