Briefly, this program will record data (time, location, speed) while travelling in a repeated path.
Standard NMEA GPS strings every 0.1 seconds from an external device connected via Bluetooth
Line Segment(s) (i.e. Finish Line, half-way line)
Current distance relative to crossing finish line
Current time since crossing finish line
Prior "Best time" from crossing finish line to current location (distance)
Prior speed when at current location (distance)
Save data to file.
Show data on screen.