Processive bio-molecular motors, which move actively along cytoskeletal filaments, drive the cargo traffic in cells and in biomimetic systems. A single motor molecule is sufficient for continuous transport of cargoes such as vesicles or latex beads over a few micrometers. To achieve transport over larger distances, several motor mole-cules have to cooperate. Scientists from the Max Planck Institute of Colloids and In-terfaces in Potsdam have now developed a new theory that only seven or eight mo-tor molecules are sufficient for directed transport over centimeters or even meters.