Spied: Audi A8 6-door

Audi A8 6-door 1

Our spy photographers caught this unique Audi A8 L (Limo? 6-door?) cold weather testing in the Arctic. We are guessing that since this car is running Audi test plates it has to be a prototype. It could also be a one-off for German Chancellor Angela Merkel or another world leader. This mysterious 6-door Audi A8 will remain a mystery until it official breaks cover.