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Convertibles
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Alpina
2015 Alpina B4 Bi-Turbo Gallery
2015 Alpina B4 Bi-Turbo Gallery
2015 Alpina B4 Bi-Turbo Navigation
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2015 Alpina B4 Bi-Turbo Navigation
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2015 Alpina B4 Bi-Turbo Menu
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2014 BMW B6 Bi-Turbo Gran Coupe
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Vehicle information, history, and specifications from concept to production.
