But what about unintentional damages? Say some kids are nearby and playing with a basketball, etc. or you have some stuff to bring home from Wallys and it has sharp edges and doesn't quite fit in the trunk...
Vandalism isn't the only thing that damages a car, and undoubtedly a fabric skin car will be more fragile.
Regarding unintentional damage: it would be more prone to some types of damage, certainly. But less prone to others. Runaway grocery carts? No sweat. Bouncing stones on the highway? No paint chips.
Also since the skin comes in very, very few pieces wouldn't replacement be a nightmare? Have to get the whole thing redone, not just a fender panel or something.
According to Chris Bangle in the video, it takes about two hours to completely skin the GINA. I'm also assuming that a production model would have more pieces of cloth than the concept. Probably separate pieces for the door, hood, etc, just like a metal-skinned car. Replacement, if anything, should be cheaper and faster than replacing bodywork on a metal-skinned car, it seems to me.