I would look at something like this to keep your luggage from becoming a missile in a collision:
Black Full Coverage Pet/Cargo Divider - Part Number PDFDPU15BK by Dirtydog 4x4. Location: Behind Front Seats. Available in Interior Department at www.carid.com
www.carid.com
Then perhaps building a basic 3 sided platform that your Malinois can comfortably fit under if he won't eat it. I've got former K9 GSD and he does really well in the back of the Raptor in a hammock (never damages anything and seems to like it back there). However, put him in an enclosed box or structure and all bets are off. I know GSD's are often more calm than Mal's, but the same general set of issues. Part of the reason I have my Raptor is it's a much shorter jump for my guy vs. my old truck.
Unfortunately, I am not aware of anything out there ready made that quite fits the bill of what you are looking for.
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