Elon Musk has recently announced plans to send two unmanned BFRs to Mars in 2022. If the timeline is met, what robots will be sent? As I understand, the tasks will be
[...] landing two cargo missions on the red planet by 2022, [SpaceX] hopes to be able to confirm sources of water and potential hazards by that time. SpaceX also plans to start building mining, power and life support infrastructure that year [...]
These ambitions definitely need thorough preparation themselves, maybe just as much as the BFR. Is there any information out there about what kind of robots will be used, and whether SpaceX intends to develop them itself or to buy them?