Fully gassed and fixed up my first ever car, was disappointed that I couldn’t replace the missing part of the windscreen with barbed wire. Definitely gotta be something that isn’t opaque that can prevent things from easily climbing in, in place of glass.
Seconded. There should be options for wire mesh, metal grating/rebar, and plating w/ vision slit. Mesh should be fairly ineffective and provide no wind protection but cause minimal loss of vision. Metal grating would be a reinforced version of mesh that reduces vision range. Vision slits would be strongest and provide a sealed environment, but would severely restrict field of view. Firing ports would be a variation on vision slits without any glass, allowing wind through while firing out.