Solo Plastic Cups Have You Noticed That If You Pour Pepsi Into A Glass , It Remains Fizzy. But If A Plastic Cup, It Goes Flat?

Have you noticed that if you pour pepsi into a glass , it remains fizzy. But if a plastic cup, it goes flat? - solo plastic cups

And if Pepsi is poured into the cheap plastic "Solo", drinks, forget it ... INSTANT goes completely flat.

Why do this? Eat the plastic bubbles of carbon in any way?
Perhaps this can be used to solve global warming!