Is there any way I can prepare my car and myself so I don’t end up in a YouTube video?

I know most of the course from Gran Turismo. I think..

We will be staying a weekend, and we will drive my car there one day, and my dads Forester the next.

Its a 4-5 hour drive. Me or my car have never driven that long, at least since while I have it. The longest I drove is 3 hours so I think I will be okay. I hope my car will be too.

Is there anything I need to take with me or make sure of before I leave?