I'm also not suggesting a joy ride. I'm telling you flat out, it would be extremely dangerous to you and others to do this. Autopilot has a very bad time deciding when it should or should not follow lane lines. It reacts randomly and poorly to cars cutting in and out in front of you. It reacts extremely poorly to lane size and shape changes. And it will not stop for solid metal blockers in your path like stopped cars of crash rails.
In other words, this is how to exercise literally everything that autopilot does poorly. Please don't test it, please don't do it, because you'll end up another statistic that's used against the development of these semi-autonomous systems. When you get more experience with autopilot, you'll figure out what it does very badly and what you can experiment safely with.