Check out 10 minutes of chase video with three BMW 6er prototypes and the G-Power M3 Coupe.

M5board.com has released their own 10m 25s spy video of the 2012 BMW 6-Series Convertible and Coupe.  The catch?  Site administrator Gustav made the score while driving shotgun in the G-Power BMW M3 Coupe SKII CS on the Autobahn.

Three different prototypes were caught on camera, at speeds of up to 250 km/h (155 mph).  The speed is an easy feat for the 635-horsepower G-Power M3, but it is nice to see the 6er models make it to that level.

The cars were spotted near Heilbronn, Germany, about an hour and a half from Nürnberg.

VIDEO: G-Power BMW M3 Coupe chases convoy of BMW 6-Series prototypes on Autobahn