Add one for making yours how you want it. There is someone here (The search gurus can take this one) that did a slick mod covering the rear side windows and painting them body color. I like AA5's alot but - This gives it same effect but makes it more unique. Check it it dude, its really nice. The audio upgrade can be as nutzo over the top as your wallet will let it. Keep it - Summit White HHR's are regal and yours is really nice.

 

Here's the Mod HHR is talking about:

https://www.chevyhhr.net/forums/how-tutorial-library-21/diy-1-2-panel-23392/

Also click the enclosed link to view completed listings on ebay to see just how bad the market is right now for HHR resales:

http://motors.completed.shop.ebay.co...c0.m283&_rdc=1

Good Luck with Your Decision,