The mystery is finally over! Watch as the MythBusters use ice, water, refrigerators, freezers and fire to test the fastest way to cool a six-pack. Then the team builds a new crash-test dummy ... and drops it 60 feet from a crane. The result is baptism by destruction for Buster 2.0, and a high-speed, high-impact crash the likes of which ... well, see for yourself. And finally, they may not have had iPods or remote controls to use them in, but did ancient peoples have batteries? Learn whether a crude form was invented more than 2,000 years ago.