To ease traffic congestion in the Philippines’ main financial centre, there’s no way to go but underground and afloat, said businessman Antonio Tiu, who is leading a venture for one of two subway projects in the capital region.IRC Properties Inc., Tiu’s venture with Chinese and Hong Kong companies for a US$3.7 billion underground system in Metro Manila’s Makati City, has also submitted an offer to run and upgrade the rickety Pasig River ferry service, he said in an interview on 25 August.