The elastic band could expand in both directions or either. If I assume the band expands so fast that I remain at the same point with regards to a point of refe

The elastic band could expand in both directions or either. If I assume the band expands so fast that I remain at the same point with regards to a point of reference, have I not still moved by 2m along the band after a minute? I guess it's more about the semantics of how moving along the band applies. Also how the expansion carries the mouse has to do with its movement. E.g. if it's galloping it would not carry it.