Personal injury attorneys successfully target hospitals or auto repair shops. If you are an Estate attorney, it might work well to target destinations frequented by high net-worth individuals such as art museums or country clubs.
When it comes to healthcare, personalized advertising can be difficult because of regulations. Geofencing marketing becomes an attractive alternative because you are focusing on geographic location rather than individuals.
Vehicle purchases are made at a physical location. Since the target audience is located within the vicinity of the auto dealership, targeting just that geolocation is ad budget well spent.