Motor Home before the Vandals...

There is this mysterious vintage camper van on the Plaza de los Dos Congresos, just a stone's throw away from the Argentine National Congress. I was always curious about the "what and why" of its presence, apart from parking. Is it a form of political protest, a camper who will not leave until his/her problem is solved in Congress? Protesters are pretty common on this plaza, either as single demonstrators or in groups. But maybe the van was just left to rot and gather more rust. Anyway, it obviously has become sort of a message board with all the graffiti tags on it. If you know more about it leave me a comment. Well, not on the bus of course. (;