This is one of those things that you sort of wonder, "Why hasn't this been designed sooner?"
Someone tweeted Elon Musk recently, asking if he could add a feature to their Tesla cars that lets other people know their dog is comfortable in the car, when the owner has stepped away.
Musk responded "yes."
We can tell you this much in the meantime: Tesla introduced a feature in 2016 that keeps the car at a safe temperature for a duration of time, even when it's off. It was designed for child and pet safety.
But, clearly, more to come!
Jack and Carolyn talked about it on the air! Listen here: