We've actually had people express interest in vacationing with us, but in reality our pace is a little odd for most people.
A typical conversation with Jennifer, when we are planning our trips goes something like this: "If we drive for 10 hours, that will be long enough for the kids..." "Yeah, but if we turn here, it'll only add 5 or 6 hours onto the day, and we can shoot (insert famous landmark here)." "Yeah, okay - that sound good. The kids can sleep in the truck."
I don't regret how we travel, but it's not for most people.
Our (at the time) 4 year old daughter seems to have taken to it quite nicely...