When on a road trip in my car I drive around 800 miles per day.
So if I have a 2,000 miles road trip I would take around 2 days to complete the road trip and if the road trip is a 3,000 mile road trip I would make the road trip and get to the destination within 3 days or 4 days depending on if I decide to stop at a hotel and rest a day or two before traveling further on.
Sometimes driving for a few days gets too tiring and it's nice to just take a break and stay off the road for a day for relaxation.
I also stop every 2 hours because my butt gets sore if I sit too long in the car on the long road trip.