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When Setra Motorsport was racing their ultra-modified BMW M3 R, they weren’t expecting the unforgiving Nüburgring test track in Germany to literally take a part of their car away. Barreling down a straight away at speeds in excess of 180 miles per hour, the passenger side door–which must not have been properly secured–ripped clean off and flew into the grass. Hopefully they were able to make the appropriate repairs some time later, but the driver’s hilarious befuddlement says it all.