Modern religious leaders are experimenting with A.I. just as earlier generations examined radio, television and the internet.

© Michael Starghill Jr. for The New York Times

Turo, which investigators say was used to acquire the vehicles involved in the attack in New Orleans and explosion in Las Vegas, was emerging as an alternative car-rental service.

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Renters of both vehicles had used Turo, a peer-to-peer app. Officials are investigating possible connections between the two cases.

© Edmund D. Fountain for The New York Times