Autonomous targeting and release of drugs at their site of action are desired features of nanomedical systems. Now, a team of Dutch scientists has designed a nanomotor that has these functions: An antitumor drug encapsulated in self-propelled, self-assembled stomatocytes is carried across the cellular membrane and released inside the cell upon a chemical redox signal that disassembles the vesicle membrane. This deliver and unpack nanomedicinal system is introduced in the journal Angewandte Chemie.