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This is a stretch of road lined on both sides by trees, with an attractive little town at the end of it. If you are in the area and have the time, then take the drive. Otherwise you can see similar elsewhere.
This place is well known to everybody, and to me is dear.
However my suggestion is, after you have seen Bolgheri, to move to Bibbona (not marina di bibbona) and see another small tuscany village which still owns the original characteristics.