When I First Looked At This Photograph,

of a Volvo with its own fuel production plant on its roof, 

photographs of Volvo, Gijs Schalkx, it reminded me of this,

photograph Roberts Armory, it is a Adler limousine converted to run on wood as a source fuel, as fuel was in short supply in WW II many attempts were made to use different combustibles to power vehicles, 

back to the Volvo, Schalkx's DIY project, titled The Plastic Car (Is Made of Metal), consists of an old red Volvo with a roof-mounted "de-refinery" that heats plastic to obtain oil for the fuel tank,

plastic is loaded into this reactor and burned in an oxygen-free environment to make it evaporate into gas, when the gas condenses again, it is in the form of oil, which then drips down through a tube into a fuel tank in the back of the car, ready for use, Schalkx used only his own household recycling to power the car, which he drove for around half a year while making a video of the work, needing around one kilogram of plastic for every seven kilometres,

the de-refinery takes roughly one hour to produce 12 litres of oil, He also limited himself to using only his own household waste in the project and drove only as far as that would allow him – around 100 kilometres in a month. Compared to someone buying a new car and driving it, he says his environmental footprint was small, "If you're a designer, you're making things, producing things, but we actually already have a surplus of things," said Schalkx. "So I don't think we can ever be really sustainable." But food for thought, perhaps a full size refinery could convert plastic to fuel?