To demonstrate the remarkable force of water, Richard and Jonny enlist some firemen to push their car using water jet force alone before trying their hand at some barefoot waterskiing. They then witness a machine that cuts through steel and rock with water propelled at 1000 meters a second – about the speed of a flying bullet. Then onto a floor testing facility, where real technicians walk on wet floors that increase in incline until they fall over. In a bid to find out how we spend £4 billion a year on chocolate in the UK, Richard tracks down a 2.5 ton Kit-Kat and a £140 truffle made for Madonna. Lastly we visit a Wellington boot factory where it takes just 6 minutes to make a wellie.