I have said before about a damn good control set up for a driving sim;
Using the Wii wheel or similar [purely because you need the extra grip]
the balance board acts as peddals - accelerate and brake.
The nunchuck could also be plugged in [or use an extra remote, but nunchuck is easier to hold.... this would basically act as a gear lever, so if you want to go from 1st to second you just yank backward in mid air, second to third you would draw the up-right-up shape... etc (you would have to stop accellerating for a moment of course)
The only problem is holding the steering wheel and the nunchuck, but it is feasable to have nunchuck in left palm, while your fingers stretch past to the wheel/remote [try it yourself].
There would have to be control options for those without a balance board [accel/brake as 1 and 2] and for those who want to play it "flappy paddle gears" style, ie up and down gears with buttons.... but I for one would be changing gears properly.
