article_snippet: Investigators don't know why it happened,  Florida Highway Patrol spokesman Lt.
article_snippet: The driver died, and police haven't been able to interview passengers yet.
article_snippet: No one saw the accident on the rural stretch of roadway that's frequented mostly by commercial traffic, Bueno said.
article_snippet: One of the passengers flagged down a passing vehicle, whose driver called police, the trooper said.
article_snippet: Police had to remove the seats of The van to remove passengers, Bueno said.