I don't have to look away for those things, but to be fair, I've been driving the same car for 10 years. *As for your actual question, I'm no authority on this

I don't have to look away for those things, but to be fair, I've been driving the same car for 10 years. *As for your actual question, I'm no authority on this topic, but I suspect the precise hand-eye coordination requires much more of your focus. With your vent example, you can probably see it just fine using your peripheral vision, while staying mostly focused on the road. Failing that, you can at least keep that peripheral vision on the road while you focus on the vent. When you're focusing on a screen, you don't see anything else.