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That still doesn't solve the problem of the routing being vastly inferior to Waze. The only thing I use the Tesla nav for is finding Superchargers and calculating range. I use Waze for actual navigation.
Need to have root or at the very least have internal car network access. Then just switch FEATURE_vectorMapTilesEnabled to true (it would reset every time the screen sleeps)
I find the existing maps are fine for Cars Only vs Cars and Trucks on the NJTP. Sometimes the lanes chosen are not the best. But I scroll ahead on the map and find back-ups to help me choose between Cars Only and Trucks.