How long should you drive a car before stopping?

Take a break of at least 15 minutes every two hours, and to not drive for more than eight hours in a day, to ensure you stay alert and avoid the associated risks of driving for too long without a rest.

With some, they do not do that. Does it affect your engine when you do not follow?

For the engine, not really. I guess it can take 3 hours straight before rest.

I think I should follow. I used to drive straight for hours.