New test version 2.0.0
- This version supports the personal use of FleetAPI.
You need am Tesla developer account and a Tesla app registration - to get your client_id and client_secret to set up your Homey app.
Just follow the instructions on my Blog and in pair view:
The new app version is only tested as a new added car. Please check if an update for an existing device is working. Please report any issue.
To use your already added car, please use the repair function to add your Tesla app credentials.
As a big advantage in comparison to other systems like HomeAssistant you don’t need an own domain/webspace to host your public key that is used for encrypted commands.
The virtual domain at rwdevelopment.de is forwarded through Athom cloud to your Homey.
Many thanks to @Emile for his support 
Commands:
The commands are not forwarded through a CommandProxy server. Now your Homey encrypts and sends the commands directly to the car.
Not all commands are working yet.
I added a list with commands and status to 2nd post
