If you look at intelligent designs for good seals, look at a Mason jar, lid has a rubber gasket embedded onto it, that lid does not turn when you screw on the ring, but compresses it firmly to the jar. Even older radiator caps were designed this way. The cap rotates but the sealing gasket does not.
So what happened to intelligence with the Cruze recovery tank cap design using an O'ring on the threads, not only binds and twist when you screw it down, but stretches when you are rotating it causes low spots that causes leaks. Then this thing is under 25 psi of pressure.
Spotted this on day one with my Cruze, so I removed the O'ring and gave it a thick coat of silicone grease to help retard that binding and twisting effect. O'ring was bone dry and subject to binding. Really haven't lost a drop in the last four years. But a lid made like a Mason jar, with a ring on it, would not have this problem.
Another new problem that was never a problem before.
Here's another one, what do you do with that aluminum pop can after you drank the contents? Pitch it, right? Well I can tell you the quality of that aluminum is far superior than what you will find in your heater core, radiator, condenser, or evaporator. It has to be, are everyone would die of food poisoning. Crap they use is highly subject to corrosion, yet but another throwaway part.