Sounds like an expedited service vehicle for a silicone breast implant manufacturer, That would explain the various different sized drawer's in the cargo area of this vehicle LOL!
BOOB BUSTER
Honestly, I think I like your explanation better but here is what they really are:
http://www.booboobusters.com/I imagine that even after they go through a house with a fine-tooth comb, they make their clients sign a release stating that it's impossible for anyone to totally baby-proof a house.