Roads and the vehicles which use them are a huge contributor to air pollution. The construction of roads accounts for 2% of all road transport emissions. So how can we lessen the environmental impact of building roads? Well, Dutch construction firm VolkerWessels has proposed that it builds new roads in the Netherlands out of recycled plastic. They intend to initially create the plastic roads in Rotterdam – as part of a pilot scheme. The roads will be hollow – with enough space in them to contain plumbing and cabling. Not only will they last longer, they will also be quicker and easier to lay and maintain. The ease of maintenance is partly due to how well they can withstand extreme weather conditions.