Ehm... wait...
The keyboard is NOT mounted in the steering wheel when i drive the car...
I only make the photo for demostrate the tiny space used from this keyboard and the easy way for use them when i stop the car...
Normally, the keyboard is in the glove box...
Like this photo show:
what you see in the upside of the glove box, is the iBook G4... and the red point in the power supply port, is the eject button for the CD/DVD..