Dang, those front wheel fairings are unstable in a crosswind, with so much area ahead of the wheel. I wonder if the new horizontal surface at the rear is to add energy to the boundary layers between the other shapes. I don't think it is essential aesthetically.
If anyone is planning something similarly slick, it can also be done using flexible composite A-arms instead of compact trailing arms within the wheel, with some savings in weight and cost, and more wheel travel.
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