It was intended as an in-car game console / GPS navigation combo unit.
One of the unique selling points was that it could use the Saturn hardware to create a 3D map simulation of a planned route that you could view in advance of going on a trip. So, you could take it in the house, watch the simulation, then put it in the car for the actual trip and use the GPS navigation.
https://www.hitachi.co.jp/New/cnews/9512/1201.html
It was intended as an in-car game console / GPS navigation combo unit.
One of the unique selling points was that it could use the Saturn hardware to create a 3D map simulation of a planned route that you could view in advance of going on a trip. So, you could take it in the house, watch the simulation, then put it in the car for the actual trip and use the GPS navigation.