This is useful information, being that I'm a police officer by trade lol. A k9 will hit on it no matter where you hide it, even inside the gas tank or inside the tire. If we could see as good as a dog can smell, we would be able to read fine print at 3,000 miles. Better hope they don't have a dog. If they say they're bringing in a dog, your best bet is to do the old "ok, you got me" routine, unless you enjoy your car getting ripped apart. If the dog says it's there, it's there. A lot of cops get pissy when they know it's there and they can't find it; car interior might suffer lol.