Mazda Proving Grounds
Miyoshi Proving Ground is an automobile testing facility in Miyoshi, Hiroshima, Japan owned by Mazda Motor Corporation. The facility covers 1.667 million square meters of land and opened in June, 1965.
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Miyoshi Proving Ground is an automobile testing facility in Miyoshi, Hiroshima, Japan owned by Mazda Motor Corporation. The facility covers 1.667 million square meters of land and opened in June, 1965.