Ohhhh, You couldn't ask better question.
I was coming to this year's Annual Meet in Scotland as a late booking due to bits needed to be done for this trip.
There was no rooms left in Tyndrum so I borrowed a tent, sleeping bag and air mattress and head of towards lovely Highlands.
Long story short, on the first night when I got to the camp site I got out from the car (past 11pm), huffed, puffed and got back to the car.
I slide the passenger seat almost all the way back and down as far as possible, played with lumbar support, headrest, shoes off and that was me done.
Woke up next day like it was a normal day, all I felt was the tiredness after driving 9hours day before and some alcohol, other than that a great night. Found 2-3 good positions, avoid rear seats, unless you are really short.
I would strongly recommend using your 8 as a overnight accommodation
I proved some time ago to my Mrs that A8 is a perfect family car (after coming back home in an A8 when I promised to buy a Ford Galaxy), proven by many that 8 it's a ultimate car (combination of luxury and sportiness) and most recently I proved that 8 it's also a perfect campavan with a boot like a double door wardrobe
F*** the tent mate, all that hassle, rain, wind, bugs, put the passenger seat down and enjoy your stay in a 5star mobile penthouse
