I'd like to see them design a rear end inspired by the Porsche 959. I bet it would result in a much sexier looking car with much better aero.
The Porsche managed a cd of 0.31 despite the Saab 900 windshield and the body going in deep between the wheels.
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2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)