Starting my first UGV project - need some starting help

dxw00d:
I'd be surprised if you could get 500m (1640ft) in clear air, let alone in a forest, but I'm not an expert, so if anyone knows better, I'd be interested to hear.

That would be no problem in clear air, as my RC airplanes have range of 1km+

If I use Nootropic Design Video Experimenter shield on my Arduino, will I be able to add GPS function to the Arduino?
I don't see a way to use a shield on top of the noobtropic shield. Are there other ways to add GPS? Modules?