Has NASA gone nuts?
"Or rather, the rovers were each encased by a tetrahedron of 24 airbags that absorbed the impact, then bounced and rolled to a halt. The airbag shell then deflated and the tetrahedral case blossomed open so that the cradled rover could roll onto the relatively unpolluted surface of Mars."
Having played some football during my long gone and misspent youth I discovered that a partially inflated football just doesn't bounce.
Could that be a simple as well as feasible solution?
Like in "only partially inflate the airbags!"