At least, I don't think this is how they're supposed to function. But I could be wrong. I've never driven an Opel. Maybe they're purposely designed to look like they've got some sort of crazy shaking disease.
I'm not a mechanic, nor have I ever worked on this particular car, but I'd say this looks like a malfunction of an electric power steering system. Either that, or it's got Kuru.
That could be wrong, though. Anybody have an idea about what could be making this thing go haywire?
Oh, and before I forget. If you ever get in your car, turn on the ignition, and this starts happening, try not to drive. Just a friendly reminder.