Houston, we have a problem..

[jezmatron]

How does the Mars Rover fuel itself?

As seen in an answer to a prev Q, it has now been up there for 2 years and is still going strong!

[jake-the-peg]

Here's a diagram

http://astrogeology.usgs.gov/Projects/MER-Athe naMI/images/rover_config.jpg

the clue is the purple bits! :c)

[jezmatron]

Thanks mate.. it must be really efficient then!

[Llamatron]

It just doesn't move very fast or for very long.