Extraterrestrial rovers Spirit and Opportunity have been roaming Mars for the last four years. To improve on this sort of record is not that easy, but NASA is working on it. A new Rover is in works, that can beat those old models hands down.
The new rover will be nuclear powered, as opposed to those pesky solar panels, which so much obscure Spirit's vision.
It will be equipped with laser gun, and may be with a couple of machine guns - which can be handy if rover is used on the Moon, or if Martians will get too close.
The work is well on the way, and a number of prototype units are being tested in Mars-like environments overseas.
The good thing about rovers being nuclear powered, is that they are capable of nuclear explosion, which proves unparalleled flexibility of the design.
The only thing that still is missing, is a name for new Rover, to be blasted to Mars in a year. Hopefully, public will help us out with that.
If someone cares about details, here are the links to look up - although we never can be held responsible for the content of outside sites, period.