BMW has unveiled the Concept Speedtop, which is basically a wagon with two-doors. While part of its name is “Concept,” BMW also announced that it will be available for purchase in a small series (70 units), equipped with the most powerful V8 the German brand currently makes. So that means the plug-in hybrid powertrain used by the BMW XM Label, which produces 738 horsepower. Or it might be the most powerful non-hybrid V8, used by the previous-generation M5 CS, in which case you’re looking at 627 hp.
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