I don't get it. Do motorcyclists use whether someone's in the driver's seat to determine whether the car is moving or not? Shouldn't they be looking at the brake/head lights?
But to directly answer your question: in fact, most people on a motorcycle will try to look at the driver, when possible, to check if the driver is looking at them to gauge whether the driver sees them or not. In the case of a Tesla, it’s impossible to know if the car’s sensors know you’re approaching...
Also, I don’t know any human beings that share a similar driving pattern as the Tesla while it’s being summoned. It seems to start and stop unpredictably and does so in a very jerky nature (and most humans do not drive as slow as in the videos, and yes sometimes driving slowly is more dangerous than driving regular speeds, and most humans also won’t drive on the wrong side of a lane, which the Tesla often does in videos I’ve watched... it’s just very unpredictable
The "no driver" phrase relates to the likelihood.