Didn't get around to watch that until now. That is seriously impressive!
truly impressive indeed and i think a similiar system could be fabricated for the red Donker.
You would need an second "Ring"/actuator on the steering wheel with simply another wheel bearing behind the first bearing, which will be activated by pushing the ring and a hydraulic piston would produce pressure which will be then fed though a hydraulic line to the master break cylinder. (the pressure of the piston must be potentially higher than the foot operated pedal ... a bit like bike brakes. So less travel for the thumbs and more brake power/pressure (which must be mathed out, Narf !
). So you would press the top ring,i think pulling gas is more natural than pushing ... like on a bike, for the brakes and pull a second ring for the gas. The gearbox could stay the same or reworked to be an Dog Engagement gearbox so clutching would only be used to down shift or for lifting of from still stand (see from 2:53
http://www.youtube.com/watch?feature=player_detailpage&v=NC7TcYBXeBc#t=173) or going full Donkervoort with an self built Sequential Manual Gearbox (SMG). I know garage guy who build one for his 500HP 4Motion Golf MK1 (1/4 mile setup). Anyway i would use the same technic for the gearknob, a potentiometer like a TPS or an MAF that will actuate a servo (hydraulic or electrik ?) which would actuate the clutch pedal or in an hydraulic case would be directly linked to the gearbox. Then putting all the hydraulics and some other bits and pieces (like circuit borads for the servo and such ) in a case at the end of the drivers footwell where normaly the pedals would be, so other people would have a place to keep their feet and
you would have more space that ugly leaver on the right side of your legs could go in the bin. Also a quick release for the steering wheel, so accessing everything (for big guys getting in and out
) in the car would be easier.
This is just a brain storm though ...