Sure, I understand all of that Luw, but the A8 has a very rigid all-aluminium body - I'm sure with extensive use of light-weight materials an RS8 could be an awesome vehicle - yeah ofcourse the idea is ridiculous - but so was the Bentley Mulsanne Turbo, the Bentley Turbo R and RT, the Bentley ArnageT, etc.. - sure they're not track cars but they're fantastic - I just have this dream of a large luxury car using lots of lightweight materials with a super-rigid aluminium body - it so sounds like an Audi RS8 to me.