I like to be able to visually see my commuting time when I look at my calendar so to be able to visually extend a calendar event (in perhaps a muted colour or standardized "commuting colour" ) to include it would be way better than having to manually put in (and then potentially delete if things change) a separate event to show that I am commuting during a certain time. I would also use a feature like this for things where I have to show up early to something even though it doesn't actually start until later. Thanks!