2019 BMW M5 CS spied

BMW has been snapped testing what appears to be a more focused M5 'CS' on the Nurburgring. Although it's very similar to the 'regular' M5 visually, there are a few hints this car is packing an extra punch. For one, it's wearing a carbon gurney flap on the boot lid, something BMW fitted to the M3 and M4 CS variants released last year.