pretty sweet ... that is the future. Does one need this? No. Do I want this? YES.
Should try to do the same thing for my Tesla - shouldn't be too hard since Tesla has 3rd party API. Homebridge is awesome to bring unsupported devices to HomeKit (the Ring integration e.g. is even better than what Ring integrates into Alexa which is surprising since both are owned by Amazon).
EDIT: just looked on homebridge ... Tesla integration for Apple HomeKit does already exist:
https://www.npmjs.com/package/homebridge-tesla