As a very new member here I have really enjoyed finding other crazies who love getting in the car and just GOING! Certainly the risk factor and jaunt profiles fit us - know where you are starting and where/when you have to be back, arm yourself with maps and a couple of guide books and then just head off. It has never ceased to amaze me the difference in experience between people who take a tour of a country and people who roadtrip. For instance, I doubt if anyone on a tour would have had the delight of visiting Haga Haga on the Shipwreck Coast in the south east of South Africa. Fortunately we had a heads up from a bunch of very friendly locals at a bar/restaurant in Port St Edwards who suggested Haga Haga as a must see. A tiny settlement, a very cheap self contained unit in a back yard with spectacular ocean views and a couple of kilometres walk along a pristine, wild beach confirmed their recommendation. The same goes for our fanstastic drive from Front Royal, Virginia all the way down to Baton Rouge, Louisianna mostly along Parkways.
To me that is the essence of roadtripping. Finding spectactular places that you would never see or read about by talking to people who live there and having the freedom to go to the places they recommend. It is the ONLY way to travel!