And they say Kamara was washed.

I know he's 30 but he doesn't have the typical NFL wear and tear that most feature backs had of an era that has passed. Plus, he really takes care of himself. He can get 15-18 touches and still be super productive while hardly breaking a sweat.
He was used properly vs the Panthers (20 touches) 15 rushes for 80+ yards and 5 receptions for 20+ yards which gave him the typical 100 all purpose yard game that made him the versatile back Payton envisioned and used when he drafted him, not the bell cow DA and PC tried to use him as.