There are only two basic options. We can upgrade the existing M50, re-engineering the junctions and widening the road to three lanes, which would cost approximately €800 million to €900 million. The disruption caused by four years of continuous road works would be pretty horrific. The other option would be to build a new motorway further to the west of the city, an M60 so to speak. The cost would be great and the planning difficulties would be greater still. It might take a decade to get to the point where construction could start.