Develop an application which receives GPS data via a bluetooth device to a tablet or smartphone.
Interpret this data as a real time graphical display on the tablet.
As part of the information displayed create a track or path typically triangular to be followed again in real time and apply various parameters. Track created by 'drag and drop' on tablet screen.
Display on screen, compass bearing, altitude, ground speed.
Provide audio cues to guide the driver around the track without viewing the tablet eg "left, left, left, on track,,,,,,,, on track,,,,,,,, turnpoint reached"