Volkswagen (VW) has introduced their new L1 Hybrid concept car, which they say is the most fuel-efficient car in the world. It uses 1.4 liters of diesel to run 100km (61 miles). It's a very small car, and weights only 350Kg or so, and has a tiny fuel tank of just 6.3 liters (1.7 gallons). VW says that the L1 hybrid will be available in 2010, in limited numbers.
The L1 uses an OLED display - for the display screen in front of the driver (we do not know the specs of the display yet). Some reports say that there are actually two OLEDs, one in each side of the driver.