Funkmobile
Member
Someone needs tweet verygreen as I'm guessing they know. Here are the stores that all seem to point to a combination of services.
Speed Limits: openstreetmap.org
Maps: MapBox
Navigation: Valhalla (Mapzen's Open Source Engine)
Is Tesla using OSM via MapBox, Valhalla? / Questions and Answers / OpenStreetMap Forum
How to update nav maps
Tesla's new 'light-years ahead' navigation and maps engine is 'almost done', says Elon Musk - Electrek
Tesla still derives part of their map data from Google. In Vancouver, the satellite imagery was update to something very recent (I believe June/July, 2019) . The map data copyright in the Model 3 maches exactly what you see on the Google Maps before and after this recent update.