Rover 2 was the rover that Mark Watney used.

Rover 2 Crop 1

It was modified significantly to fit the oxygenator, the water making machine and all his food. He drilled holes into the top and put a 'balloon' in it in order to make the right conditions for the oxygenator and to make it bigger. Watney also salvaged the power cells from the abandoned Rover 1 to double the power lifespan of the Rover 2. On top of all this he also dug up the RTG to use for heat as the Rover heater used up a quarter of the power, in doing so he actually made it too hot and so he had to strip back some of the insulation.

Rover 2 Crop 2

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