Under Pressure

S1 E5: The MythBusters investigate six myths about pressure. They build a pressure cannon to see if a ping pong ball impact could be fatal. They also test the affect of water pressure on a deep sea diver, find out if firehose pressure is enough to lift a car; if a bullet can be fired in space; if a vacuum cleaner can lift a car; and if steam followed by rain can cause a railroad tanker car to implode.