Conversation so far:
when was the first in car navigation system invented
The Electro Gyro-Cator was claimed to be the world's first automated commercially available automotive navigation system in 1981.
Who manufactured the Electro Gyro-Cator system?
The Electro Gyro-Cator was co-developed by Honda, Alpine, and Stanley Electric Co..
Which cars had the Electro Gyro-Cator system?
In its only year of production in 1981, the Electro Gyro-Cator was announced as an option on that year's Honda Accord and Honda Vigor.

Question: was the system expensive
Self-contained rewrite: Was the Electro Gyro-Cator system expensive?