A swarm of spherical rovers, blown by the wind like tumbleweeds, could enable large-scale and low-cost exploration of the Martian surface, according to results presented at the Joint Meeting of the Europlanet Science Congress and the Division for Planetary Sciences (EPSC-DPS) 2025.
I’m not sure that would work well.
The Martian atmosphere is thinner than Earth’s… then again, they did fly a copter there.