The 2011 BMW M5 was spied undergoing testing at the Nordschleife.
BMW had introduced the next generation 5-Series sedan earlier this year. Now its M division, is concentrating on developing the flagship version of the series, the M5.
The highly anticipated M5 will debut a year after the standard 5-Series will make its first public appearance at the 2010 Geneva Show on March next year.
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