Holy crap, that's honestly barely believable!

7'14, 1665kgs, 3l/100. Those numbers shoud NOT refer to the same car! How do they do it??? That's just ridiculous. 

Isn´t the miraculous fuel consumption in EU-Cycle based on the fact, it starts with fully charged batteries and exploit them throughout the whole not so long test ?

What kind of fuel consumption can we expect on a longer run on Autobahn (say 300km) with speeds in 200-300km/h range ? Electric engines with their recuperation will regain some energy given away by braking, but I would still expect 15-25l/100km with this kind of usage.