Senator Quinn may not want to be associated with a proposal which might be an add-on, though he made it clear that his proposal is intended to be a substitute scheme. Every proposal should be looked at but Senator Quinn's proposal is not a matter for the Minister for the Environment and Local Government, rather the Minister for Finance. It could be considered generally in the context of green taxation but there are some obvious difficulties when it comes to putting an extra tax on petrol. Increases in petrol would have a significant impact on inflation and petrol and diesel increases would also impact hugely on those in transportation and the taxi industry, for example, who depend on driving for their jobs. Those in rural areas would also be significantly affected, as by and large they have no other mode of transport apart from their cars. Senator Quinn referred to public transport and pay-as-you-go schemes but unfortunately in the real world of rural Ireland we do not have the public transport systems which operate in urban areas.