Polystyrene? Yes. That bucket is probably HDPE or something like that though which wouldn’t react to gas. Most modern car gas tanks are some form of high density plastic.
You live on a world where the temperature is only on average 288K? It's so cold there that H2O exists in its solid form on the surface in places!!! How can you people even move let alone have any active biological processes?
He’s an ass until he finds out why Wyll did what he did. Then he’s tolerable.