Vehicle with only 1 spherical wheel (actually, we do have 2 more motors that drive it)

I recently thought of a unicycle, It goes with one wheel, and I thought, ‘Why don’t we make another one that goes on one wheel?’
If the wheels and motors arranged like this:
-[] <-- X movement
⊙= <-- Y movement
We could make X and Y movement of the spherical wheel.
And if we use a joystick (Here goes blynk!) We can change the X and Y movement.
*Also, use a rubber bearing on the motor, It’ll help roll the wheel.