Well, you could use it in a cab mod I guess, but the atom isn't powerful enough for some things, and it's be a trick to seperate the screen from the keyboard, which I'm guessing for most cabs you'd want to do.
Still, that'd be a great thing to have if I had a home media center PC in the living room. You could remote control it via that keyboard. However, it'd be cheaper to just get a radio keyboard.
Just not sure.