i'm not going to tell anybody to stop driving. it's not my place to say that. but with that said. a lot of people here are forgetting about the situation with @cathy58. and why her daughter is concerned about her driving now that she is on oxygen. you are not put on oxygen for nothing. many reasons & factors go into being put on oxygen. 1 main reason is lack of oxygen to the brain. lung problems. don't forget the oxygen gets to the brain through the blood. and actually Cathy did not give a reason for being on oxygen. so, please remember these things when advising what she should or should not do.