In normal daily life, I tend to "visualize" everything as whole (I'm sure the same with other deaf people) and when I communicate with a person then someone else joined, standing next to us. If that someone is talking to someone else and was talking incorrectly about something, I have the tendency to "correct" them while still talking to the original person. That ability is often found in most deaf population. Now with that skill, I do the same while driving. I focus my attention to the road, instructed my passenger to pull chair up as forward as possible and as comfortable as possible. When they talk to me, they sign more "audible" (more visible, or more obvious) so I can better communicate with passenger while driving. Sometimes when big word came up, I quickly divert my attention to passenger quickly for that specific word then return back to normal. But during night driving, it is little harder because it is like trying to visualize in the fog so I had to turn lights on for the entire conversation.