For many people the attraction of a road trip is that it gives them both the time and space to discover for themselves the reality of a particular area, geography, history and future.
A good road trip is likely to be a uniquely personal experience, because it gives the individual or individuals involved the freedom to decide for themselves what they want to see, how they want to see it and what it means to them.
In many ways, a road trip of any decent length is a microcosm of the real joy of the energy of travel, both in terms of exploration and in terms of freedom, both internal and external.
This article in travel and leisure highlights different types of road trips
It is a combination of detail and review, of authenticity and pitch. What it does show, is that a road trip can be pretty much whatever you want it to be, and time allowing, can be an invaluable journey of self expression as well.