As an Australian, not an American, we drive long distances too. We express in km/h and km, not mph and miles. Due to high risks of sleeping on long straight empty roads, rest breaks are taken seriously here. I’d consider a 10 hour drive as door to door including minimal breaks. It would be foolhardy to drive without breaks. However, if I was describing the distance without breaks, I’d say that. If I was taking longer breaks, I’d say it too, for clarity.

My in laws live near the border of the next state. It’s a 6 hour drive without stopping. I’d describe it as a 7 hour drive, door to door. We have done it in 9 hours with stops in playgrounds for the kids. If I was describing that I’d still describe it as a 7 hour drive that we took extra breaks, so it took 9.