I think a road trip is when you don't have a timeline or a plan. Or a known destination. In the late 80's I set out in a customized van and headed south intending to drive untill I could take my shirt off. (Warmth) I ended up gone for six weeks. I visited New Orleans during Mardi Gras and headed west along the southwestern coast of US. Saw the Alimo, Grand canyon, and tons of other attractions as I headed north up the west coast and back towards the east after I hit Seattle. 8000+ miles. I'll never be able to do that again.. but I am glad, at least, I did it once.