The Mercedes Westie web page is:
http://www.mercedes-benz.com/e/cars/rv/marcopolo/photo1.htm
and it is in english.

Here are some of the cool features:
Additional bench seat with head supports and 3-point seat belts extends
seating capacity to 6.
Storage module-additional storage room for toilet; cover with padded
seat; anchored to the mounting rail.
Sliding glass insert for pop-up roof.
Mosquito net for glass pop-up roof.
Safety net for pop-up roof for children sleeping in the loft.
The only thing missing is all wheel drive.
Maybe someday we will see the Vito Marco Polo  in the USA.

Kevin M
'89 Westy
Bothell, WA