What the HELL is going on in this new Shell ad?

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The ad, created by JWT London, was released late last month. It features the Forth Bridge, the iconic cantilever railroad bridge in Scotland. It also features a menacing attack-balloon full of CO2.

The url in the ad leads to this page about the Peterhead CCS Project, whose goal is to capture "up to 10 million tonnes of carbon dioxide emissions...from the Peterhead Power Station." The emissions would be "transported by pipeline offshore for long-term storage deep under the North Sea." This is a drop in the global cooling bucket.
 
It's always fun when Big Oil trots out their disingenuous "environmental" ads. Before the Gulf Spill, bp featured the cutest alternative energy logo you'll ever see. That logo and program are now as dead as all the wildlife that little oopsie-daisy disaster destroyed, and is still destroying.

Back to the above image. Of all the ways an art director could show "captured CO2", why create this scene?!? First off, that doesn't look like that much CO2—like about from one car from one trip to the country and back. Secondly, as soon as that attack-balloon hits the bridge, it's gonna burst, and all that carbon dioxide will be released into the atmosphere—joining the shittonnes of CO2 created and not captured by petrochemical companies like Shell. The nonflammable explosion will certainly capsize that boat and probably damage the bridge, maybe even destroy it.
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Below is a US Shell ad from 2007 that ran in the Wall Street Journal. Yes, those are flowers coming out of Shell smokestacks because, "What we can do is find creative ways to recycle. Greenhouses use our waste CO2 to grow flowers..."

Careful you don't choke on that thick irony.

(click image to enlarge)