One of the primary tasks of the Jet Propulsion Lab is robotic planetary science. This talk will discuss the current state of the art in planetary rovers, the Mars Exploration Rovers, focusing in particular on their autonomous capabilities. There will also be details of some of the scientific results of the MER mission. Several limitations are still inherent in the MER rovers, however. These limitations will be identified and some possible suggested solutions will be presented. This will include details on a prototype system, TRESSA for advanced planetary science. The talk will conclude with a brief discussion of robotics, JPL, and NASA opportunities.