A pre-planned route != self-driving (in my opinion).

I say that because it's not driving itself, it's driving a route you plotted or recorded.

You can't take that same tractor and have it work on your neighbors pasture as-is, it has to be programmed.

But again, this is getting into a semantics debate. Personally I'd prefer to differentiate using autonomous and automated, self-driving is too ambiguous.

By that logic, am I driving the car while following the route plotted and dictated to me by Google Maps? What if it's all over two-lane freeways, so all I have to do is stay on track, not crash into the vehicle in front of me, and follow Google's instructions? And what if I then turn on adaptive cruise control? Am I still driving the car?

So you really think looking at a GPS and driving a car yourself and putting cruise control on makes a car self-driving?

(hint: no, you are driving the car with assisted technology)

I'll remember to cite this in the next Tesla thread when we discuss Autopilot and self-driving.