1. Reiterate the objective 2. Clarify, what is the objective of the rover? expedition of rock sediments, soil etc. What kinda of terrain is expected? for how long (say 2 yrs)? would it need to be self repair or station is available (obviously not)? In this case it needs to have some self repair and backup-backup-backup instrument? what kinda charge (solar). What are size constraints? (depends on what the interviewer says. I would imagine in future, space shuttles can carry bigger load ) 3. i think the key is the long term and rugged to sustain the rigorous terrain Solution: 1. Start with motor, tires, materials 2. Shock observers 3. Self repairing components (we might then need a bigger payload thus cost+) 4. solar charging (big panels) 5. All the existing exploration units (cameras, connectivity, etc) and so on