Multiple realities
(covers information from several alternate timelines)

The Doctor sits in a 1957 Chevrolet Bel Air
The Bel Air was a mid-20th century automobile built on Earth and sold under the brand of Chevrolet.
A holographic representation of a Bel Air, identified as a '57 Chevy, was used in a holodeck program created by Tom Paris for The Doctor's date with Danara Pel. The two spent an evening in the Bel Air atop the hills overlooking Utopia Planitia on Mars – Paris' idea of a perfect date. (VOY: "Lifesigns")

A 1953 Chevy 150 with Bel Air sidetrim
When Benjamin Sisko received a vision from the Prophets, he saw himself in the 1950s and he was immediately struck by a taxicab that was a 1953 Chevrolet 150 with Bel Air sidetrim. (DS9: "Far Beyond the Stars")
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