Game Boy Advance Becomes Car Tuning Tool
Thanks to 1UP for its story discussing a new Game Boy Advance peripheral which "turns the GBA into a data logging computer and tuning interface for sports cars". The story explains of TurboXS' DTEC peripheral: "The basic version of the DTEC turns the GBA into a customizable digital gauge for displaying boost pressure, RPM, and different temperature settings. Future upgrades will evidently allow it to show more indicators, like G-forces, knock warnings, and other data."
Before you all go out to buy this, you need to first purchase a custom ECU for about $1000, and this company only makes them for a handfull of cars (Subaru, Mitsu Evo, Toyota MR2, Nissan 300zx, Neon SRT4...). Follow the 2nd link in the original post for more info.