I'm pretty sure they will have built a duplicate or two to keep on earth as essentially a staging / testing environment. My understanding is this is absolutely

I'm pretty sure they will have built a duplicate or two to keep on earth as essentially a staging / testing environment. My understanding is this is absolutely the case with the Mars Rovers which have engineering versions here on Earth such as this one: https://mars.nasa.gov/news/8749/nasa-readies-perseverance-mars-rovers-earthly-twin/ https://mars.nasa.gov/news/8749/nasa-readies-perseverance-ma...