WHAT'S IN THE BIG BOX?

Am I the only one who wondered how the giant oil containment box that BP planned to position over the leak would work? Like-how would it adhere to the ocean floor? Wouldn't water pressure make it rise and float away? Wouldn't it fill with water and not just oil? Natural gas, also? BP=BIG PROBLEM.
And, I read they are building a second one!
If these boxes don't work (and one hasn't so far due to ice crystals), what will become of the boxes?
Could they be used as housing in a third world country? A rope-climbing facility? A warehouse, wedding chapel, or cover for a missile? Imagine crushing and recycling metal worth mega millions.
Wait, I've got an idea. The boxes could be modern monuments-certainly historic now- to BP and Halliburton planted along the Houston Ship Channel or at corporate headquarters-maybe adapted as an aviary.
I remember all the friendly environmental hype spewed out by BP these past 10-20 years. Just words...and words don't stop a fatal spill, do they? BP and their friends were simply not protected against emergency that is never totally unanticipated.
I think BP and maybe Halliburton are over...and I pray they are not nationalized; but stranger things have happened. They are probably necessary to our national energy supply, necessary to the military - and thus national security. Reminds me of the Wall Street scenario-the companies that take us down, also support and build us up.