They already use Gameboys for track displays at the larger race tracks in the states. GEt a radio cart and plug it in and you can see the current lap times, standings etc...
I have a turboXS stage2 in my WRX and I was talking to phil @ TXS about this last year around this time. I guess it's pretty cool, good for people that don't have a laptop to tune their car with. The TXS tuner is a great accessory for those of us that have TXS engine management computers.
