Probably, as far as i know tesla uses several different sources. They do use the Valhalla routing engine for some stuff, when i tested that, it also correctly routes to the driveway (https://valhalla.openstreetmap.de/directions?profile=pedestrian&wps=-83.97017955780031%2C42.55244801301115%2C-83.89235258102418%2C42.51246727052624, the car profile also works but you need to disable the "exclude unpaved roads" setting first), so they are probably using something else.