Instant Index: The Piano Man Is Back

Diane Sawyer with the stories people have been buzzing about all week.
3:00 | 01/28/14

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Transcript for Instant Index: The Piano Man Is Back
Our "Instant index," beginning with this video we saw everywhere today. Did you? All of us asking, is it a hoax? Is it real? A white-knuckle experiment. A test of the emergency brakes on a tank, allegedly from the Dutch military. 23 volunteers, a 62-ton tank, barreling towards them at 42 miles per hour. Watch the horizon and listen. As the roar gets louder, only two of the brave souls even flinch and look behind them. Today, we called the Dutch military to ask why? And they told us, they're looking into it. But they're as puzzled as the rest of us. And the piano man, Billy Joel, back in the saddle, reaching for history. ♪ Last night, kicking off a series of concerts at New York's Madison square garden, as an artist in residence. No one's tried this before. He's going to perform a concert a month, open-ended, going as long as the fans keep coming. And the piano man is still up to the challenge. And we've all seen all the rock stars on the cover of "Rolling stone" magazine over the years. Ad Adell, Dylan, Michael Jackson, beyonce. Now, a different version of a rock star, pope Francis. The first pope to make the cover. Calling him the people's pope, the magazine put it best, saying, the times, they are a-changing. Up next, music from

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