I just spotted this in a parking lot a row over from where I was parked. I don't recall ever seeing a "half panel" before.

 

I dont have the exact number. However they are a rare version. Especially in SS trim
They are called an AA5

 

i believe in '09 there where only about 105 SS's with the AA5 package and almost 3,900 built in LS and LT versions: (my #'s could be way off)

and cuz I can't resist, here are 2 pics in SS form... unfortunately the BFM is no longer with us:

 

Interesting,and thanks. While we're on the subject of limited production and rarity,what is the rarest documented HHR out there?
Could it be the "1 of" Marshall Amplification Edition???

 

That's possible.........

PS: Where you been hiding ??

 

Guess I got one of the 3900 2009's. Don't see any around here to match mine. I have even had people ask me if mine was custom made without the rear side window. I see a few Panels but all are work vehicles: Safelite, one of the Chevrolet dealers and a local florist.

 

My HHR's are half panels. 1 panel + 1 SS = 1/2 panels.

 

Er, swap the rear doors and I'll give you credit for that.