Random exertion game idea: Tron

Hey guys, so I'm sure everyone already knows the game Tron, but here's a link anyway.

I came up with this while I was thinking about parallel play games (sorry if that terminology's wrong Floyd), but while I was thinking about using positions in games I thought of this.

This game uses 2 soft-modded GPS systems so they display the position of both the GPS itself and the partner GPS. In the example I've used 2 cars, but obviously running or cycling with one would be a better fit for an exertion game.

So, it's pretty self explanatory; the GPS' display car positions and draw a line over where they've been.The grid system that the city or even suburban areas are generally based on would work really well for pixel perfect movement, a'la PacManhattan.

And just like in tron, if you run into your or the other players' 'tail' then you lose. I think that if you were using cars for this over being on foot, bikes or whatever else then another player per team could make for some pretty exciting games, with one acting as a navigator and the other one driving (It'd probably be a lot safer as well).

Anyway any comments or critiques are welcome, just a random exertion-game related post.

-Shaun