It isn't all messing around as Hammond shows how to rid the world of the scourge of traffic cones.

You might think that The Grand Tour will just be an hour of Jeremy Clarkson, Richard Hammond, and James May messing about. But there is a more serious side to the show, as this behind-the-scenes clip shows, in which Hammond is addressing a serious problem that blights drivers the world over.

You probably thought that traffic cones are mass produced, by the million, in a gigantic factory. But according to the cheeky video, you would be wrong. They are, in fact, grown. Under watermelons. For reasons no one really understands.

Hammond shows us just a small cluster, but vast swatches of land across the world are given over to traffic cone production. They are ridiculously easy to farm - you just put a watermelon on the ground and wait for them to sprout. A few weeks later, the fully grown cone can simply be plucked off the ground.

They grow all year round, in any climate, and in any type of soil. They do, however, prefer to grow in the grassy areas of World War Two airfields. Ideally, ones that are now used as test tracks. For reasons no one really understands.

The process was accidentally discovered by Swiss botanist Dr. Herman Affictray-Onecay while he was investigating ways to improve watermelon yields. He dismissed the cones as useless, but an evil genius road planner working in Britain, Theodore Idlockgray, realized they could be used to bring traffic across whole countries to a standstill.

They occasionally serve a useful purpose in protecting road maintenance workers, but the true reason for the presence of traffic cones is rarely clear. Indeed, it often appears their only purpose is to bring untold misery to drivers and drain billions from the economy in lost working hours. For reasons no one really understands.

Fortunately, there are ways of ridding the world of traffic cones - a process that is, ironically, made considerably easier by where and how they grow, and just happens to be massive fun. We can only assume Hammond has made an instructional film that demonstrates how to wipe out the traffic cone scourge.

Be part of something big