There are more controls available in Tesla apps than in the Tesla HASS-integration, for example lights and the horn.
Those two would be great to control from Home Assistant, for example to hook up to a house alarm, so the car would start to flash it’s lights and honk the horn if the alarm goes off (if geolocated at home). Or just turn the lights on when leaving the house after dark. Or use the car to light up the driveway if movement is detected.