How to outsmart Tesla’s Autopilot by using no hands at all! IS THIS LEGAL?

We all know Tesla has an autopilot that enables the car to drive by itself. However, Tesla, by law, has to ask the driver every 30 seconds if he/she is still there. In this video I am driving from Groningen to Amsterdam and am I trying to outsmart the Tesla by using a small water bottle to prevent the system from asking that question. My question to the community and police: IS THIS LEGAL?!

It also works in the new Nissan Leaf 2.0:

I wasn’t the first one to come up with an idea like this. See how these guys use the same trick but use an orange instead: