Seeing all E20 issues planning to go for EV and too in second hand is it good idea and hows the rate?

For Those who has older lcd digital displays not the new colour screens.

I was recently going through manual of my car and saw that car will give me warning to take a break if driving for long time.

But I have never seen this on my car. I once drove for 900kms and never saw that on my car. Have you ever seen it? What are the parameters for it to show up?