S1, E3: The MythBusters investigate six myths about pressure; they build a pressure cannon to see if a ping pong ball impact could be fatal, they test the effect of water pressure on a deep sea diver, they find out if firehose pressure is enough to lift a car and if a bullet can be fired in space; they investigate if a vacuum cleaner can lift a car and if steam followed by rain can cause a railroad tanker car to implode.