there is a stupidly large number of specs of m1 procar. just google m1 procar and they will be slightly different in ever pic. The one in this pic is homogenized to group 4 for the Nurburgring 24 hours.
Yepp - thats right... but I guess you can simply open or close the window like in a road-car but if you want to drive with open window, you have to place the net... BUT on the rear left wheelhouse, the green spot is missing...