I've always been tempted...
I have read that the trip is fantastic!! But you do have to plan and book the car months in advance in most cases, so make sure that you talk to a salesperson about this. Check out Curt Rich's site on the Euro delivery. After reading his in-depth coverage, you'll probably want to go right now!! Thinking about a C320 in the spring and we'll be in Europe anyway on vacation. May want to take delivery in Sindelfingen and extend the trip a few weeks. As a C rents for $80-$100 per day, it doesn't seem like a bad deal. The only problem would be the 4-6 week that it will take to get it back home. I was thinking about it on my last car, but it was sort of an impulse purchase.
DC KunderCenter (Customer Center) Sindelfingen