You might also be able to do that with Teslafi (as long as you trust someone since they would have some remote access to the car). In fact, that might be a good idea in case you lock your purse or something in the car/trunk and then lose your phone, it falls in the river, or battery dies. If you can use someone else’s phone to call a friend/love one I think they could remote unlock the car via Teslafi.If you don't have an iPhone but do have a Google/Gmail account, you can share your location with specific people so that Google Maps will show them where you are. It's not always a real-time/up-to-the-minute location, but most times it's good enough. My daughter and her boyfriend did this on their recent drive from Florida to Oregon and it was comforting to know how they were progressing.
This actually brings up another point. While I rely on my phone 100% of the time for my Tesla key, make sure you have a key card with you (purse, wallet, even pocket if you must) and then maybe toss the other one in a night bag that you always take into the hotel room with you. You never know when something is going to happen to your phone or it’ll log you out of the app and you don’t have phone service in that spot.