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Yes, the 'jelly mould' look and trying to make the car invisible to the air is old thinking aerodynamics-wise. Look at some of the current cars with the lowest cD figures. Nowadays, thanks at least in part to a better understanding of the coanda effect, it's all about controlling the airflow. I'd guess that the roof level splitter on the van above is to help deflect air around the vehicle rather than over it.
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