You thought BioFibre was weird? How about a car made out of papier mache? That's one element on a long list of weird and wonderful materials used to make the Peugeot Onyx. But the good thing about this car is it's actually been made. Peugeot fitted the ultra-lightweight car with a 3.7liter diesel engine which pumps out 600hp and is capable of doing over 100mph. An electric second motor — yup, this is a hybrid — adds an extra 80bhp. The chassis is made of carbon-fiber and the bodywork out of copper panels which will turn green as the car ages. Inside, the dashboard is made of compacted recycled newspapers (that's where the papier mache comes in) while the panelling and steering wheel are recycled felt.