I had thought of this and I think it is possible from reading previous posts here, but it is a total DIY solution. I was thinking to play with an ESP8266 or ESP32 (An Arduino with WiFi capabilities) and put a Can bus hat on it. Then write some software to pick certain data off of the can bus and serve up a web page with the information: State of Charge, battery temp, 12V battery voltage, or any other thing you'd be interested in. So when parked in your garage or even with a phone app over wifi or perhaps bluetooth, you can see the information. Could even make it 2 way, such as to allow to unlock doors.
Currently, I don't have the time to do something like this, but it would be fun to try.