Richard and Jonny delve into the world of rubber to test tyres. After whizzing around a track with a top stunt driver, they head to Dunlop’s testing chamber - The Burst Cell - to witness a Boeing 737 tire being over-inflated to destruction. From tires, onto toilets where we join a team of toilet sniffers who create fresh smells to annihilate malodors, plus see their 250 simultaneous flushing toilets designed to test cleaning products.Later, our duo finds out what’s inside a motorcycle helmet and follow the development of the ubiquitous paper clip. Finally, go behind-the-scenes at a plastic bottle factory to see how tiny plastic tubes become huge 2 liter pop bottles.