Yeah, the blind spot is a huge issue, I've driven quite a few of these when i was employed at a chevy dealer and it's difficult to see out of it even with windows.
either way, this is a cool looking HHR, and chevy could very well have a hit. People will just have to learn to really use mirrors, like driving an Express Cargo Van or the like.
Im positive the key comes out of the fob because when the battery goes dead, you must use the key to get in from the back and then that opens the doors with the pull tab in the hatch. otherwise, theres no way to get in. all 05/06 vettes had the key as well.