GPS feeding Slew mode

Hey all,
I was wondering if anyone knows of a utility or someone who has managed to use live GPS coordinates as an input for slew mode. Basically, instead of using the joystick as a source, or typing in coordinates, the plane would "fly" in slew mode constantly updated by the GPS in real life.
If anyone thinks this is possible or already done, I'd love to hear about it.
Thanks,
Konyak
I was wondering if anyone knows of a utility or someone who has managed to use live GPS coordinates as an input for slew mode. Basically, instead of using the joystick as a source, or typing in coordinates, the plane would "fly" in slew mode constantly updated by the GPS in real life.
If anyone thinks this is possible or already done, I'd love to hear about it.
Thanks,
Konyak