The ad men working for Mercedes came out with a pretty fun and clever ad:
http://www.youtube.com/watch?v=nLwML2PagbY
The only problem is they were completely outmatched by the geniuses working for Jaguar:
http://www.youtube.com/watch?v=3PQS8SFWNQw
If you're still interested in one, Mercedes-Benz of Greenwich is a great dealership. @ 261 West Putnam Ave, Greenwich, CT 06830