>Sure, but a lot of cars don't have them, and that's just the speedometer, not the speed limit or navigation directions (which are usually what I'm glancing at

>Sure, but a lot of cars don't have them, and that's just the speedometer, not the speed limit or navigation directions (which are usually what I'm glancing at my phone's map app to check) Most automotive HUDs show speed limits and navigation directions alongside speed.