I am pretty careful where I park my Porsches when I leave them on the street . Sometimes I wonder if my caution is misplaced when I see valuable cars out and about . I saw this beautiful Ferrari just parked on the street in Brussels last month . And how about the rare as rocking horse droppings Porsche Carrera GT casually driving out of the camp site at this year's Le Mans ? Presumably his mates bought his tent in their Cayenne.