curl --request POST \
  --url https://api.tread-horizon.com/v1/route_estimate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "pickup_site_lat": 123,
  "pickup_site_lon": 123,
  "drop_off_site_lat": 123,
  "drop_off_site_lon": 123
}
'

{
  "data": {
    "pickup_to_drop_off_time_minutes": 123,
    "pickup_to_drop_off_distance_meters": 123
  }
}