I don't care if you were behind the wheel, I don't care if you were behind the joystick, I don't care if you were manning the conn...
The only thing that traveling a certain speed at a certain time renders is distance.
Distances have nothing to do with the shape of the earth.
Get that through your head.
Distances have everything to do with determining the shape of an object. Measuring an object is how you determine it's shape.
Oh really? The sole and only way to do so is by distance...
Tell me, how do you know you are looking at a rhombus and not a square or a diamond?
If you have a set of points where you have measured the distance between them, you can find how they can be arranged, which will tell you the shape of the surface they are on. If you have enough points you can eliminate some shapes and topographies entirely because they won't fit.
This is why knowing the distance between cities is useful for learning about the shape of the world they exist on.
One more time.
Just because I travel a certain speed in a certain amount of time, deriving a certain distance traveled, does not tell me the shape of the trip I took.
Trips that humanity engage in are such that regardless of the distance used:
* mythical spherical; or,
* REALITY BASED flat measures:
The alleged differences between the two are laughingly negligible.