They will never get a train. The beautiful design of SBC and YPR, without anyway to bypass them from the HSRA-DPJ line is the main reason this line is unused. Why has SWR never considered activating the YPR-Devanahalli line to airport, in a mere 1 crore with a station under the trumpet flyover, they can ensure superb airport connectivity. Reason- vayu vajra will be in losses. Now they will build metro till airport, when the line in the city has itself crossed so many deadlines and god knows when it will open. Tomorrow they will plan to build metro till hyderabad also extending the airport metro :P