I suggest you enroll in a physics course, this is physically impossible for the average case of net-zero displacement at a near-constant speed (i.e. roundtrips)

I suggest you enroll in a physics course, this is physically impossible for the average case of net-zero displacement at a near-constant speed (i.e. roundtrips). There are scenarios where it's true, but there are a lot of factors involved (drag, power/efficiency curves of the engine, etc..., net-negative displacement, etc...)