Ha. As someone who used to walk a mile to work along a very busy street, I wish I could find in-ear-canal earphones that actually blocked out the outside world

Ha. As someone who used to walk a mile to work along a very busy street, I wish I could find in-ear-canal earphones that actually blocked out the outside world. I heard every car no matter how ridiculously loud my volume was. People talking on phones often don't hear cars but I think this is because they aren't paying attention (note this can be a problem even with no headphones at all.)