It's funny how these people come up with all kinds of costly, barely feasible projects, while ignoring the existing railway infrastructure, which can be enhanced with only a fraction of the money required for the Metro projects. Airport-YNK-BYPL section barely has any trains and so does the BYPL-Hosur line, and these can be upgraded to run frequent local trains with a minimal cost overhead, unlike metro, which will definitely take more than a decade to complete, with the phase 1 itself now over due by 5 years.