The concept behind the 1 Liter Racing League borrows from a number of different styles of transportation. The idea behind designer Moritz Martin’s project was to incorporate themes of swamp buggy and Land Speed races, as well as the Eco Marathon. His idea was that drivers would complete the circuit one just one liter of petrol; the course appears to be a blend of shallow water and beach sand. The vehicle itself is designed to be as efficient as possible on both surfaces: according to the designer, the wheels on the car would actually lift up and allow the car to skim the surface of either water or sand, allowing for high-efficiency travel similar to that of a skimboard. The car would also feature retractable wheels, which would benefit drag at higher speeds, and a rear-mounted air nozzle to control the craft during slides. The concept seems more video game than reality, but again, the idea of getting a lot of fun out of a measly liter of fuel is incredibly cool.
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Source: 1 Liter