The crane released. Two tons of steel plummeted, hitting the water with a thunderous crack . The car didn't just sink; it pancaked, sending a geyser of white foam fifty feet into the air. When the silt cleared, they dove down to find Buster. He wasn't trapped under a "cap"; he was flattened against the lake bed.
They activated the pumps. The water roared. They released a simulated diver near the mouth of the scoop. There was a sickening thump-squelch . Watch Mythbusters S03e02 Scuba Diver And Car Ca...
To test the "Car Cap" theory—the idea that a car hitting water could create a vacuum or a physical 'cap' that traps a diver—they built a rig. They submerged a crash test dummy, "Buster," in full scuba gear ten feet below the surface. "Dropping the car!" Adam shouted into his radio. The crane released