Departure search

 "departure_searches": [
    {
      "id": "departure search example",
      "departure_location_id": "London center",
      "arrival_location_ids": [
        "Hyde Park",
        "ZSL London Zoo"
      ],
      "transportation": {
        "type": "driving"
      },
      "departure_time": "2018-09-17T08:00:00Z",
      "properties": ["travel_time", "distance", "route"]
    }
  ],