Quote:
Originally Posted by JasonG
It looks like the cd should be a lot better than 0.18 
Basjoos did better than that with rippled sheet metal (no aerocivic disrespect but its like the time and $ money difference between weatherspotter and the zombieinsight )
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The main reason the Cd isn't lower is that they are producing a car that has to meet existing EU government automotive regulations and that they hope to sell to the typical automotive consumer, so they can't go out as far on the aerodynamics branch as I can. If they added a complete boattail, front wheel well skirts, low rounded nose, no exterior side mirrors/video, and more aggressive wind deflection around the wheels, then they could have lowered the Cd further. But some of these mods may not allowed under EU automotive regulations, would require more maintenance or have cold weather constraints, or be more susceptible to road debris damage than the aero mods they included.