In another integration I used a fixed time entity for ETA notifications.
This integration uses time to arrival, and my YAML is so bad. A new entity would help as right now my notification looks like this and doesnt work:
service: notify.notify
data:
title: Mum's on the way home
message: >-
Her ETA is {%
set tesla_arrival_time_utc = states('sensor.model_y_time_to_arrival') | as_datetime %}
{{ tesla_arrival_time_utc | as_local | as_timestamp |
timestamp_custom('%I:%M %p') }} as she is {{
states('sensor.model_y_distance_to_arrival_2') }} miles away.