There are a lot of factors for me that affect drive time.
If I'm going to be driving by myself, I really rather not go more than 3 hours
But them the destination factors in. If its a neat place or a good hike, I'll go 5 or 6.
If I've got a driving companion, 5-6 hours easy, maybe 8---especially if there's a good Mexican or BBQ place on the route.
But the the destination factors in. If I have a companion that wants to drive the 10 hours it takes to get from Houston to the Wichita Mountains or Palo Duro Canyon AND we can leave early on a Friday and return late on a Sunday---or better yet, Monday, I'll do that in a heartbeat.