Even if you own a Tesla, we recommend you don't try this, at least not yet. The law came down hard on a British man who was sitting in the passenger seat while he let his Tesla drive itself. The court found this was not a good idea.
Read The SF Chronicle:
https://www.sfgate.com/news/article/He-Drove-a-Tesla-on-Autopilot-From-the-Passenger-12873243.php
Flickr Photo - Ian Kennedy