After the post office screwed** up the delivery I didn't get around to taking the unit out in the car until after the 31 day returns deadline.....
So I might open it up and have a play. I did look at NMEA message formats in relation to using a GPS Rx module in another project. I can feel an Arduino project coming on. I might be able to use the display parts with a new case to make it work as required.
** the dozy postman tried to deliver the unit to the wrong address. Upon finding the householder out he threw my parcel over the rear fence where it sat in torrential rain for the day and night. We know, we stayed in that day due weather! A week or so later, when the recipient got back from a holiday away, he tried to deliver it to us but we were away for 10 days. The Post Office have still not worked out what happened to my parcel but agree that the proof of delivery photo does not show my property.