...A bit more on the Impala:
- The size: The car really isn't that big, and by no means does that dictate sales to the regular public. It is only marginally larger than the extended Epsilon models overall, and beyond that, it isn't the largest car in it's class. But oh well, points are made and not considered, no big deal. If size is the sales killer, it must be what killed the Fivehundred to create the Taurus.
- The gear selector: I'm not certain what the big deal is here either. It becomes obvious that you've never driven a car or truck with a column shifter, where you have to check the dash to find the gear. I do it all the time with the Avalanche, Tahoe, and Envoy (but even then, that has a console shifter). Sure, they aren't marked, but even a prophetic automatic God such as yourself should know the order: PRND... Maybe growing up driving GM vehicles has trained me too much. I wouldn't assume it to be "IMPOSSIBLE" for anyone...
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More on topic:
Keller, I'd give the Caliber and Magnum cautious looks. Many people are won-over by the styling and the capability of the cars but overlook the poor quality of the product overall. Don't let it scare you too much if it still has a warranty on it, but just keep an eye out for issues when you look at them.
...My Aunt has been looking for a new sedan for a while now (similar criteria of your Mom), and we originally looked at the Charger for her. She wasn't too keen on the materials, but she wanted it more for the looks. I've pointed her towards the Aura, and things are looking good on that front, but she has yet to make a decision.
As for the Caliber, despite every inclination that tells me to hate that car, I just can't bring myself to do it. There are so many clever little gizmo's and do-dads to make it appealing that you almost forget about the poor quality... Almost. My problem is that the dashboard sounds hollow (knock on it, you hear it), the plastic feels like 180-grit sandpaper, and the overall size it conveys seems smaller than what you would expect.
...But the cooler in the glove-box, lighted cup holders, the detachable and rechargeable flash lights, and the speakers in the tail-gate make me want to forget that. I can't remember if they put the heated/cooled cup holders in there as well, but I find that feature to be awesome as well.