I think what would be interesting is whether this could be used for doing on demand stuff for the car, like trunk delivery the way that its done here: https://www.amazon.com/b?ie=UTF8&node=17051031011

If the authors are here, you might want to add what cars are actually supported to the page. It doesn't say anywhere.

Presumably Tesla, since that's in the screenshot, but anything else? There appears to be zero documentation.