Mercedes-Benz just sent us a new accessory to try out – the Convenience Box for the 2011 E-Class. I installed this one myself in a 2011 E350 with split folding rear seats. This would do a great job of containing groceries or other bags so they don’t roll around in the cavernous trunk when driving! Ask you local parts department to order one for you! Part number is 212-680-00-10-9051. MSRP is $400.