Overall good episode, with a predictable result in the fuel economy race. They made it more dramatic, than it needed to be. I know from firsthand experience that the combination of a big fuel tank and a big Diesel engine is practically unbeatable on long distance runs.
In August I did 900 km (ca. 560 miles) in a Mercedes S320 CDI and had 18 liters left in the tank after refilling, which means I would have been able to drive it for another 200 km and that means I could have done 683 miles in it, if I had ignored the tank reserve warning. The important part, however, is that I was not even trying to drive slowly or economically. As a matter of fact, half of the time I was driving pedal to the metal, which means up to 250 km/h on the German Autobahn, doing kickdowns most of the time.
But let's not forget that the Polo was the most economical by far, even though it is much more stressy to make the distance with a small car.
A bit disappointed about the Veyron lap. I cannot get rid of the feeling that the Stig held back a bit (surely the car was privately owned). Not that it matters, though. They Veyron is still the fastest under real life conditions with an average driver.