Well there's always........ CHOCOLATE!

but for those who prefer to chat about fast Formula 3 racing cars or even garden veggies ...

THIS is the topic for you ....

'"Components made from plants form the mainstay of the car's make up, including a race specification steering wheel derived from carrots and other root vegetables, a flax fibre and soybean oil foam racing seat, a woven flax fibre bib, plant oil based lubricants and a biodiesel engine configured to run on fuel derived from waste chocolate and vegetable oil.'