Thank you for sharing this. While everyone remembers his writings, encouragement, and contributions to tech/business, the photos put up by him are beautiful as well.
very interesting. I'd echo the comment by another user that the website needs to 'show' what the app UI is like.
The marketing aspect of the app would be key - the app store is crowded for convoy tracker apps - but hardly anyone is framing the "friends" angle. Good luck!