Some aero thinking - P&G would be nice but the G bit is lacking at anything over 60, so after re-reading PWs 307 thread I wondered about adding something like he has to the rear - I pause before calling it a Kamm back, more my feeble attempt. I also imagined covering the rear wheels.
I don't know how to attach this as the rear tailgate is a glass hatch as seen here
I also looked at the front. George is quite clean there, only the green bit in this pic is open, and the radiator behind is super tiny.
Underneath, I don't think there is a belly pan in there.