The car has a sleek, aerodynamic look—the back wheels are covered and mirrors on the doors are digital cameras instead of the wind grabbing old-school variety—the body is also tapered. The XL1 is the latest entry by VW to make vehicles it calls 1-liter cars—those that consume just one liter of fuel when traveling 100 kilometers. The XL1 is considered a limited edition vehicle
that VW is making to test demand. To achieve such high efficiency, VW has followed three main ideas: making cars that are light, aerodynamic and that have a low center of gravity. To that end, the car is made light (it weighs just 1,753 pounds) by using carbon fiber polymers, magnesium, ceramics and aluminum in its various parts. It’s small as well, measuring just 153.1 inches in length, and 65.6 inches across and 45.5 inches from ground to roof.
Read more at: Phys.org