Propane Powered Taxi Cab in Taiwan 100213

Me and my cousin catch a cab from Taipei to Hsinchu city. To our surprise, this taxi cab was a dual-fuel vehicle that used either conventional gasoline or propane as fuel. According to the driver, the propane was cheaper and made a difference as far as fuel economy went. There was a 15 Gallon propane tank in the trunk, which I failed to record.