I have an '06 S500 4Matic, which would appear to be the perfect winter car. It's great, but there is one thing that it lacks. The ability to carry skis. I don't want a roof rack for obvious reasons. That being said, I have seen that Volvos and BMWs have either folding rear seats or a ski bag that passes from the trunk through the middle seat. Do these exist on the S class, or does anybody have any suggestions for carrying skis?