I don't need to worry about my wife, she's the one who wants me to buy one more than I do. I am deciding to wait 1 or 2 years to see what Ford will bring out. I would like to see a few standard things like IRS and who knows what else first.
Don't let your wife tell you what to do. If you want the car then just go out and buy it. Show her that YOU are wearing the pants in the family, not her. Seriously, all of my women like to bitch and moan, but I don't allow that to bother me. I do whatever I like. And I don't let my women control me and tell me what to do. My wife lets me do whatever I want. And my girlfriends all like the fact that I am free spirited and independent. Nothing ever gets between me, my wife and the relationship between my wife and the other women in my life. I do as I please 24hrs a day 7 days a week. And I like that a lot.
Get the car and let your wife drive it a few times (not too many times), but just enough for her to get the stang bug. All your problems should be solved then. Good Luck.