It was known as Autronic Eye, first used in 1952 then perfected over the decades. My late model Cadillac has a system that does both turn on high beams when needed and shut them down when sensing light from an oncoming car.
Saw a 64 Impala with the Autronic Eye option, it was rare but available from the factory. That's a nice dash on that Buick.
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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. 1963- Pontiac top selling car in Canada
Mahone Bay, NS Still not old enough to need an automatic
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.