Mr. Denis O'Sullivan:

We have undertaken a number of trials with compressed natural gas, CNG, buses, including the one to which the Deputy referred. CNG buses can be deployed in any area, whether it be an urban or intercity service. In fact, the intercity service is perhaps the obvious one with which to start. We will be rolling out the infrastructure in Cork and work on a number of CNG refuelling stations is in train. We have also been in discussions with Bus Éireann and private bus operators which are undertaking their own studies of various technologies and so on. The refuelling infrastructure will certainly be in place in due course.