Have her pull the cart around and you'll have your truck before Thanksgiving.
You have to provide justification to her for getting it. Like gathering your own firewood instead of paying to have it delivered, getting dirt for a backyard landscaping project or to fill in the garden, going antique shopping (yuck).
You don't need to go hog wild and get something like mine. Right now you can get great deals on Explorers with a flip-down DVD in the back or even an Escape with a rear power point and 7 channel stereo. Those will fit the bill and she can drive them with no problem parking it.
I put wood, drywall, dirt, mulch, antiques, etc in the bed. I do a fair amount of hauling for lady-like projects.