Okay, lets say all of us here have glaced away from the road at times
Some: + + our watches to tell the time
Looking at the speedo requires a glance, which is within margin., as is glancing at a wristwatch to tell the time.
Both are information displayed in an expected format. both are unchangiong in the way they disaply that information - there is no 'surprise' information, noe unexpected SMS text.
Except that the Speedo display can surprise: A warning light! However, it is a warning, so it is only telling you to safely slow down and then safely park. It is not telling you "that the timing chain is getting worn so get it seen by a professional now or else risk engine damage soon" - by the time you've read that, you would have crashed.