From "http://theage.drive.com.au/motor-news/mercedesbenzs-new-desert-stormer-20130301-2fa1h.html"Can you lock all 6 wheels?
"Another significant change is the adoption of Mercedes-Benz's 7G-tronic seven-speed automatic transmission in place of the old NAG1 five-speed automatic transmission found on the army version. It features a transfer case capable of altering between a 0.87:1 high range ratio for on-road driving and 2.16:1 low range ratio for off-road conditions to all six-wheels in a nominal 30:40:30 split.
The power for the rear most axle is by way of a extra shaft. There are no fewer than five electronic differential locks offering 100 per cent lock up of all six wheels, operated by three switches on the dashboard."