To make good use of that massive-little curved I-beam armrest, since the shifter is moving up to the steering column (where I can actually reach it), I am fabricating a
Todd style "big red button", emergency kill switch.
It turns out to be the perfect location, and a very natural action. It's main components are the recycled former shift knob and horn button. The big heavy knob should mean less chance of missing it, and have the ability to tolerate any excessive force exerted in an emergency situation. It will manually disconnect the high voltage traction pack for the electric drive, via a cable and rear mounted switch; and most likely simultaneously disconnect the 12volt source to the ICE ignition system.
The inset photochop is one possible finishing idea - dark red anodized knob, with a black anodized bezel.