Blueprint error I think... (I didn't test) Syntax looks wrong.

[SirGoodenough]

Has this blueprint been tested? I suspect as written it will not work...

name: Garage Door Cover
...
name: Car Presence Sensor

These are the names assigned in the top of the blueprint, however in the action section these are referred to as:

entity_id: !input car_presence
...
entity_id: !input garage_door

I believe the names have to match the !input tag, so this should not work as-is. I don't have a cover I can connect this to, so I cannot test it as you have presented it here.
That is why I am sending an issue like this instead of giving you an edit to merge.

If an edit would be helpful, let me know, I will send you one.

[SirGoodenough]

I sent a pull request with this fix.