Minor complaint; IMHO, the car needs more side-facing glass in doors and rear quarter.
All kinds of aero related stuff at the rear:
Half skirts. Interesting scalloped "spoiler." If just styling, wouldn't paint do?"
Could it be an implementation of the whale fin/tail tubercle idea?
Wave of future? DIY friendly?
Nice looking front end.
Gen 1 Honda Insight treatment of wheel wells might further reduce Cd??