Extreme mobile learning?

Mobile learning for the guitar?

There are more and more gadgets popping up that pair with your mobile devices. There is an ultra sound attachment for the iPhone. Just think of the possibilities there.  There are also some not so disruptive examples,  I have this adapter that I plug into the iPhone called iRig that along with app allow you to add effects to the guitar even emulate different guitar amps. I think this is pretty cool playing my guitar though my iPhone. Pretty geeky. But what I really need is this next one.

This is example is like extreme mobile learning! It is being touted as an Educational Instrument. You dock your iPhone to a specially made guitar. This combination of technologies assist in teaching you how to play the guitar.

gTar iPhone guitar hands-on — Engadget.