Join modified car lover and 1240bhp 4-Rotor Mazda RX-7 owner Rob Dahm as he travels across America in the search of some of the US's most insane builds. In this new 10-part YouTube series, get ready to see 1500hp Donks, an F1-style hot rod, the world's fastest Corvette, and more. American Tuned lands tomorrow, Friday 22nd April on the Top Gear YouTube channel.

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