I head over the border maybe once every couple months to pick up a package that I've had sent to the other side. I always bring my receipt or proof of purchase from the transaction so the guard knows what I've bought and can then decide if he wants to charge me duty. I've never had any problems in terms of them finding me suspicious and threatening a search but it just dawned on me that it's a definite possibility. If presented with the opportunity, would you guys walk across rather than drive across to pick up a package? Any horrific stories of cars getting torn apart?