On this episode of MythBusters, it's spy vs. spy as Adam and Jamie investigate the best way to lose a tail in a car chase. These intrepid investigators test three of the all-time movie classics: tacks, smoke, and oil all launched from the trunk of a moving car. Jamie and Adam not only design and install the weapon systems, they take turns as 'pursued' and 'pursuer.' In a fascinating physics 'thought experiment,' Kari, Grant and Tory explore whether an object fired backwards from a vehicle moving forwards assuming both speeds are exactly the same will simply fall straight to the ground. Common sense says it should, but science is not as straightforward.