A very depressing commercial.

This is the same type of bah-humbug commercial Buick did last year. If I understand it completely, I hate it. But not knowing anything about cars I'm not sure I get it. Is seems he bought her a small compact car for Christmas?  She is thrilled. But suddenly she sees a more costly Buick and she is utterly disappointed with the car he bought her. She doesn't even make an effort to hide her obvious  disappointment. Is that the message of this holiday commercial? If it is, I would take back the first car, dump her immediately and find someone less greedy. And what does the announcer mean by "to those who sacrificed one for the other"? What other? It doesn't track.