- being used in Japan
- use a Nintendo DS to control a vehicle's navigation system
- called Kuruma de DS
- set to launch on June 1st
- works with Toyota's Smart Navi system
- involves a DS cartridge that can connect to the system via Bluetooth
- use it to view maps, update destinations, and check on the vehicle's speed
- includes Nintendo-style presentation, including Miis
- ¥206,850 ($2,575)
- DS cartridge itself costs ¥7,329 ($90)

Thanks to The_King_Up_North for the heads up!