McDonald's customers were sad to find out that foam cups were being discontinued in 2018. Foam cups were the focal point of the classic McDonald's $1 soft drink (aka COKE.) They might be bad for the environment,  but they can't be any worse than the plastic cups they switched to and all the plastic they generate in other places such as lids, straws, plastic wrap from cup sleeves, etc. Please bring back the iconic foam cup. I miss my drink being icy cold for hours.