When you're packing for a vacation, pack your car as quickly as possible -- you can even go so far as to pack your trunk while the car is shut up in the garage. Why? Safety.
This packing faux pas literally just happened to my neighbors this summer. They spent days packing up their RV for Fourth of July weekend, left town, and were robbed. Because the burglars knew they were gone, they took almost everything in their house.
If you pack publicly, everyone driving by will know you're leaving town -- and not all of those people have your best interests in mind. Keep it sneaky, road trippers!