In the future, the rovers really have to be able to reason. It has to keep track of where the sun is, how much power it is using, how much power is being generated and what terrain lies ahead. In addition to dodging boulders, cliffs and streams that its video cameras reveal in its direct path, it will analyse large-scale maps to help it avoid hills, valleys and other features that might block its view of the sun. The rover will need to find ways to re-energize themselves if their missions are to last more than a few weeks or months.

Sun-Synchronous Navigation is a technique that involves tracking the sun while exploring terrain. It's accomplished by travelling opposite to planetary rotation and in synchrony with the sun. The rover must reason about its position and orientation with respect to the sun while it explores its surroundings. It navigates to capture enough sunlight to power itself while travelling through rough terrain and trying to reach important scientific objectives.

It is feasible that, at the right latitude and speed, robotic explorers should get enough sunlight to maintain continuous operation. For some missions, by following the dawn, these rovers may also be able to regulate their temperatures by staying in the transition region between frigid nights and scorching daytime temperatures. They would travel with the sunrise and never have to hibernate overnight. The performance of almost any mission would be improved by deliberately choosing where to park and orient themselves to maximize power from the sun.

The fuel form used in RTGs can be changed from a Pu-238 metal to a more stable pressed oxide.