I'm simply looking for the best way to preheat/cool the cabin(no regen considerations, etc.). Since we don't have the app yet, what's the best way to do this? If we walk away from the car with the key in our pocket, doesn't the car go to sleep? It wouldn't be a big deal to leave the key inside the car while it's in my garage but I'm not going to leave the key behind if it's sitting outside. Is there a simple solution I'm missing?