The frontal area of the bug has
nothing to do with the Cd...
and everything to do with the CdA.
The whole bug could be downsized 25% or 57% or 81.4% and the Cd would remain
unchanged.
IMHO they had a shape they wanted to use and simply scaled it so that it enclosed the mechanicals and interior capacity parameters they wanted.
They (or someone) acknowledge that there is excess width due (solely?) to the bodywork enclosing the front wheels.
Why they didn't simply articulate some front skirts to knock that width/frontal area down is beyond me...
