Before revision:  Here, we reinterpret the themodynamic uncertainty relation to define the efficiency of a motor in cargo transport . By analyzing the existing motility data of several types of molecular motors , we calculate the energetic cost (or efficiency) of generating time traces of a given precision.
After revision:  Here, we reinterpret the themodynamic uncertainty relation to define the efficiency of a motor in cargo transport is characterized with a small \mathcal{Q several types of molecular motors , we calculate the energetic cost (or efficiency) of generating time traces of a given precision.