It used punch cards. The driver would insert a punch-coded card into the DAIR device, and the holes in the card would translate to mechanical movements in the car itself, directing the driver.

TOYOTA chief Katsuaki Watanabe burst into laughter when David Fraser told him the derivation of his company name, DAIR Industries ... pedals, car jacks, hinges and strikers, to name a few ...

It used punch cards. The driver would insert a punch-coded card into the DAIR device, and the holes in the card would translate to mechanical movements in the car itself, directing the driver.