Good news I have my own A8. First fuel consumption test showed 6.1l/100km @ 95 km/h actual avg speed. Real drive speed avg was 100 km/h. Car has now 18" wheels which increased the fuel consumption a lot.
More pictures of the car can be found again at my facebook pages:
https://www.facebook.com/media/set/?...1¬if_t=like
Own DIY car projects will come but it takes big money which I dont have at the moment.