1 Martian 3: So why a Large Hadron Abrasion Tool?
2 Martian 2: Those Earthlings destroyed everything with their Large Hadron Collider.
3 Martian 2: The problem was, it was too crude, just flinging hadrons together and creating a mess. It was ultimately just sheer destructiveness.
4 Martian 2: We need finesse.
4 Martian 3: I see.
4 Martian 2: Hand me that jackhammer.

Those Mars rovers, Spirit and Opportunity, on which this model rover is based, and which landed in January 2004, had a planned operational lifetime of 90 days.

As I write this annotation, over five years later, they're both still going.

Now that's engineering.