After being ripped off and scammed over and over I decided the next one I got and if he ripped me off as well I would never get into a taxi with an Indian again. Cut a long story short he was the best cabby I had had in Perth, told him the story so he would tell his mates.
Had an African cabby from there tell me he's had the same even when they knew he was a cabby as well. I didn't get it but I reckon this bloke nailed it. He said its the cultural casting they grow up with, combine that with the arrogance a lot of them can have and they need to prove they're smarter than you. Even if its to slow down to try and catch a future red light or to pretend to misunderstand you and take the wrong exit, small or big he just wants proof he's better than you. Thought about all the interactions I had seen or had with them and had to agree.
The woman on the other hand are generally the exact opposite and make awesome doctors/nurses. They're part of the problem as they usually spoil the sons very badly and they are raised to think they're special.