Pollution. It’s a dirty word. It’s a word that sparks images of harm, the root of all our evil. The reason why war has been waged on diesel cars, and indeed on cars in general. Pollution is damaging our environment, on land, sea and air. Pollution must be stopped, immediately, or our world as we know it will disintegrate. Pollution leads to climate change, leads to death and poverty, as well as natural disasters that rob humans and animals of their habitat. Pollution is the single biggest threat to our existence, and yet we think nothing of putting our 80kg frames into a 1500kg vehicle and travelling short distances. We think it a right, not a privilege, to get into a metal bird and fly thousands of miles for a…