After receiving some help about making some specific objects indestructible (http://forums.bistudio.com/showthrea...rking-Properly), I figured out that the following code doesn't applies to some original map objects:
if (isServer) then {{_x allowDamage false; _x enableSimulation false} forEach nearestObjects [this, ["Building"], 780];};
In that radius (780 meters), I don't receive any damage if I hit a fence, for example. But I still can run over the fence, so it's falling to the ground yet. And, yes, their classnames are included on 'Building'.
There's a video showing this: http://youtu.be/iQz_zCBkWQg
It seems that "lamps on" can't be destroied, but "lamps off" can.