v ..., "routePoints":[{"location":{"_latitude": xxxx,"_longitude":xxxx},"timeStamp": {"_seconds":xxxx,"_nanoseconds":x xxx}},...], ... ..., "routePoints":[{"location":{"_latitude": xxxx,"_longitude":xxxx},"timeStamp": {"_seconds":xxxx,"_nanoseconds":x xxx}},...], ... 1レコードずつ追加されていく