All cars are set up to take alcohol interlock.
A spinner knob is used by those who only have the use of one arm / hand.
This knob is attached to steering wheel to avail someone with one functioning hand to confidently steer.
Left Indicator – An attachment is fitted to the right indicator to allow somebody who can only use the left hand to operate indicator.
Left foot accelerator – It is fitted to allow someone who does not have the use of a right foot to drive only using the left foot on accelerator and brake.