Q-cars

In wartime, Q-boats (aka "mystery ships") were ships that carried hidden guns and crew. Designed to look harmless, their purpose was to lure submarines and aircraft in close before unmasking their true nature and blasting away at the bad guys.

Our county does something similar with vehicles. Occasionally, they'll obtain a car or truck - drug dealer or drag racer confiscation* - and the county will turn it into an unmarked police car. Their latest is a silver Cadillac Escalade SUV with tinted windows, and there isn't a flashing light or extra antenna to be seen - until it's too late.

So if you're ever driving through Prince William County in Virginia, and you see a purple Corvette waiting to make a right turn at an intersection, slow down or you'll have a not-so-good story to tell later.

*In this area, getting busted street racing is automatic grounds for not only losing your license, but your vehicle too.