I took another shot at the wheel skirts, and i think i may have come up with somethinv workeable:
I actually did use trangles to help with curves!
I made a cloroplast version, but it was unacceptably ugly. So that's still on hold.
Meanwhile i made a windshield wiper cover, as i did not want to use duct tape! It may or may not help with airflow as it has some sharp angles; please tell me your thoughts.