Second airport in Sydney and fast train linking Canberra to Sydney

Comments on Michelle Grattan, Professorial Fellow, University of Canberra: “Government to build second Sydney airport”, 3/05/201

Has the government done a comparative study on which would be the most beneficial and economic option to resolve the expected increase in air travel around Sydney, of the following two options: first one as the government proposal for an airport in and the second one is to build fast train between Sydney and Canberra as the first of potentially a longer eastern coast fast train line connecting Brisbane and Melbourne/Geelong? The latter would also have other benefits than simple another airport would offer.