A new approach ? : only 1 launch for the whole challenge (failed) Secondary objective : only one rover and only one transfer vessel (2 launches) : Done ! A GrandTour Elcano "A rover to rule them all, a rover to find them. A rover to bring them all and in the darkness bind them." stock + no mods - electric propulsion only (wheels and rotor) - carried with a single vessel (without nuclear or ion) in the whole system (so the challenge would be finished with eve ... cause it