Denso had in-car navigation systems being fitted since 1987, and sat-nav from 1991. So, I had the title to this post wrong but I found the Denso link afterwards.
The system in the ST165 is a Denso Toyota system.
Granted that Japan uses NTSC while we use PAL.....do you know of anyone who has converted their reciever tuner to pick up PAL in Australia ?