ALS Victim with a Remote Tractor Toy

I'm a new member here and I was hoping I could get some advice.

My father is a victim of ALS.  The disease started in his toes/feet and is
slowly moving up his body.  Currently he can't move his legs except if they
are swinging in the air (they must be lifted up by his hands).  His hand
strength is lessening (currently his hardest squeeze is like a ladies
handshake).  Every day his strength weakens as the disease moves up his
body.  There are 1:1000000 cases, but the prognosis for this disease is
death.

I have been working in the computer programming, motion control, and
electronics design field for the past 11 years.  I would like to build an
interface for a Siku remote control tractor toy for him.  He LOVES John
Deere!

I have the toy and I'd like to adapt it to some technique of EEG control.
 I like the way the people at ambient with the Audeo use the sensors near
the vocal cords.

Am I on the right track here?  I am thinking I should order some sensors,
the SMD box, and jump in.  My idea was to try and use sensors on fingers to
brute force control the tractor and move on to a more complicated setup
involving the throat or scalp later when his fingers stop working.  He will
loose dexterity and strength in his fingers but still be able to control
them.  Eventually the fingers and even swallowing will be uncontrollable...

The only thing I'm not sure of in this project is everything related to the
EEG.  Nothing else is a technology risk for me.

Thanks for the group's time,

Grant

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