Let's say you are on a busy highway and you're listening to music, forgot what the direction has read aloud. Instead of having to look down at the map and read "in 1.2 miles stay in the second to right lane to exit 52 for i-295 south" it would be great if you could tap the directions that are your very next ones in the top left box and have it reread them out loud. Less time looking at the screen so it's safer and you can listen to them as many times as you want if you're forgetful.