I hate the silly pedo-cabs that you occasionally see in the CBD these days - especially when they appear on the main roads like George St. They crawl along at walking pace, which must annoy the bus drivers no end. I wouldn't mind if they moved at a reasonable pace, like 30-40km/h, which is what the traffic flows at most days. Due to their low gearing, they are lucky to do 10km/h.
If I didn't know better, I'd say that they are part of an evil strategy by the stupid Lord Mayor to choke car movements within the CBD.