Zaphod Beeblebrox for president - a Hitchhiker's Guide to the Galaxy promo?

In what I can only assume is some weird sort of promotion for the Hitchhiker's Guide to the Galaxy movie. This excellent and hillarious "music video" has been propogating all over the internet under the title "Zaphod Beeblebrox for president!" I ponder what it all means, for I have not yet seen the movie, yet I enjoy it none the less.

Would someone please explain it to me? Yes, even I almighty wise one sometimes come up on the clueless end of the train, for I could not find the source of this unspeakable promo. I suspect foul evil underhanded marketing is at work but I will find you oh demons of misinfo.

Watch it: zaphod.mov
(14.5mb Quicktime)

Check out the lyrics.

Zaphod Beeblebrox
He's the guy you want to vote for
When you get into that voting booth
Put an 'X' next to his name

ZaphodZaphod Beeblebrox for President
Building bridges between the stars
In no way is he stupid, oh no
In no way is his brain impaired
It's just not true
He's smarter than you
And he's better looking too

Zaphod Beeblebrox
Has the longest hair of any candidate
And he's got the coolest shades
And his teeth are white as snow

So let's elect him President
He'll build bridges between the stars
Don't believe the rumors, oh no
Don't believe those vicious lies
They're just not true
He's smarter than you
And he's better looking too

Listen I just want to say, uh, you know, whatever presidents say, you know, things like uh, in the name of the people, and uh, freedom and uh, I dont know, democracy, stuff like that, he he...woooo!

Zaphod Beeblebrox for President
Building bridges between the stars
In no way is he stupid, no no
In no way is his brain impaired
It's just not true
He's smarter than you
And he's better looking too

Transcript via: The 3 is Silent: Yes, I'm Alive