Asus Padfone – Magic or Weird?

I still haven’t decided if the Asus Padfone tablet is a brilliant idea or just plain stupid. I guess one would have to use it to decide.
The concept is basically to have two screens to your phone, one phone-sized and one tablet-sized. I honestly still haven’t figured out if the tablet has its own CPU and everything or if it’s just a display for the phone. What do you think?
Here’s a “behind the scenes” video showing what Asus had in mind when designing the Padfone: