Discuss the latest MB NA maps here!!!

Guys I live in the US and currently have a 08 GL 450 leaving for a 14 Hr Trip tomarrow but my current old dvd (2008) don't have a lots of the new address and roads. Anyone knows where i could get an iso of the latest ? Dealer wants 270.00 for new disk but will have to order it so i won't get it in time.