Happened this Friday in my wife's work parking lot (well lit area, a security guard there all the time). She is the non-confrontational type so did not pi$$ anyone off.
Seems like the person used razor or a sharp knife. The scratches are deep and will not buff out. They are on both the doors of the X5. Apparently this is the second X5 that got keyed in this parking lot. Wife plans to create hell at work on Tuesday. That person has a grudge against X5s.