As someone that is very anti-car in the CBD and in urban environments I agree with you in saying that building more roads just means more cars. Every Study I have read confirms that a "BETTER" road network just leads to more congestion and more pollution.
As for the Hale Street Bridge
that will ranks as one of the biggest wastes of public money ever
. Its a set of lights at one end and a spegette bowl at the other. That really going to speed things up
That all said I disagree about the Eastern Busway. I do believe that thing is needed. I have gone to Carindale Shopping center by bus before and it was not that pleasent.