that in my opinion is the best setup for an SUV. Still would allow a daddy like me to throw a stroller and diaper bag, or "agast!" -groceries, like I did last night, into my rig.
with careful packing and deliberate gear/equipment purchases, I'll bet 50-75% of what one brings on a trip other than clothes and dry/cold food could fit in there. (first aid, recovery, spares, flashlight, blankets, etc)
Very, very nice...