Yeah, we were concerned about security with the precise locations of vehicles being visible in real time and the recent apparent increase in Tesla thefts. This was the first time we supported something like this as well.
I recently participated in a Tesla rally from London to Monte Carlo and built some custom tech to record and share the journey. The location tracking is built on top of the Esplorio app (which my team and I built) and the metadata comes from integrating with the Tesla API.
We pulled battery levels, inside/outside temperature and also pulled in real-time wind speed/direction readings from openweathermap.org to give participants indicators on additional drag they may encounter on longer stretches. Click on a car/name to see the details.
This was kept private during the rally, but now public. We're thinking of adding a "play/pause" button to show a sped-up map of progress over time.