Why twin rovers? Why not let the rovers have different designs?
A. There are several practical advantages to making the two rovers identical. One of them involves building parts. If the designs are the same, it makes it easier to have the appropriate spare parts on hand if we need them. Another reason for twin rovers involves the testing process. If we had two different designs, many design tests would have to be performed twice. Keeping the rovers identical saves time in a tight schedule.
