I'm planning a PanAmerican route all the way to Tierra de Fuego from Mexico, but I can't get idea what could be better, if rely on public transport or take my car on the road. We are 3 persons, my wife, brother and me, and the idea to camping is not likely for my wife. So the winner combo of camping with the car is not an option.

Beside to comfort to have your own car and move to whatever your want, whenever your want... Is better the own car versus bus? As side note, I don't really want to drive from Argentina back to Mexico, but sell the car in Argentina is not good idea right?