There's a problem with German work-of-art-on-wheels auto manufacturer Wiesmann. Let's see if you can piece it together. The clues are: 1) Wiesmann sources its engines from BMW, 2) its top models, the Roadster MF5 and GT MF5, use the M5's 507-horse V10, and 3) BMW is dropping its V10 in favor of "greener" twin turbo V8s.
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