Semi-useable - I've lost several differently-shaped containers into the rear foot-well from that one.
If Fiat had half a corporate brain, they'd sell cups and bottles that are designed to fit snugly in the Panda's various orifices, but they don't even have the wit to do that. They just let some kindergarten-level designer loose on the interior, and accept their half-baked squircle nonsense without asking whether it actually works in the real world. I've not yet found
anything that fits snugly in my various cup holders.
Rant over.
PS. Your Trekking is Annoying too, but in a good way