Ms Laura Behan:

It would require the purchase of new vehicles. To our knowledge, the vehicles are not considerably more expensive - they may be 10% to 15% more expensive than conventionally fuelled vehicles. The refuelling infrastructure is the issue there because the installation of gas refuelling infrastructure is expensive. In terms of promotion of it as a policy in Ireland, we are trying to encourage fleets that might be able to be able to invest in a refuelling infrastructure. At the moment it would be a cheaper fuel so there would be benefits to fleets in taking it up, but the initial investment costs are quite high.