Maybe they just liked this version better than the one that ran (I don't).

Interesting. I notice this, though, on Ogilvy's site: http://tinyurl.com/c7hoab

Surely they aren't running two different big-spend campaigns for toy cars within a couple of months of each other?

I can see this taking off in other areas, too. I'm about to release a single under the name of Pink Floyd. I think it might make me a few quid.
Incidentally, it's pretty hard to run a recruitment ad for a client you don't have, because the whole point of recruitment ads is to invite a direct response for a particular position. I image the client would be very pissed off if hundreds of people started phoning in about a job that didn't exists. I suppose you could run a straightforward awareness campaign though (not that I would).

I love the way the guy keeps his socks on in the top ad.