Although it may look like this project is dead, it is not. I have just been coding away quietly in free moments and getting side tracked. This is project is in fact a side track to a side track. Anyhoo, progress is as follows:

menu programme written and in debug phase,
main modes of operation written,
PWM code update formulated.
GPS code half way through being written,
LCD code written (yup, we got ourselves a 16×2 LCD on this project!!)
Vibrator heads bought. (see here)