My first thought was 'what a useless game, what's it going to help with my frustrations with the taxis?' but I now believe it to be a good idea. What it really does is highlight the fact that they are such a problem on our roads that someone needed to introduce a medium where we could take out all our blood-letting desires on a virtual taxi driver. If this doesn't point out that there is a problem then nothing will.
Oh and if these psychologists think that it will actually be the course of taxi driver beatings, then exactly where have they been? It's already happening (and it's not surprising either).