http://www.peachparts.com/shopforum/showthread.php?t=61997
I'll re-post what I was able to find out from an internal representative.
"While it is correct that you have to qualify for complimentary service by the criteria that was mentioned, a huge benefit is that towing to an authorized dealership is now included. This is for any eligible vehicle, including those out of warranty. No other automobile manufacturer offers any assistance (including towing) to vehicles that are outside of the manufacturer's warranty. We have an all-new website that explains the Roadside Assistance program. The address is: http://www.MercedesRoadside.com"