Awesome hobby, my mom does this , she made a quilt for my 40th birthday. It incorporates the colors of the master bedroom rather nicely Your wife can make some serious cash doing this, as these are unique hand made one of a kind items.
Maybe if you ask her, and show genuine interest, and maybe help her, she can make you a smaller car or mopar themed quilt to cover up with in the wintertime while watching TV in your favorite chair. Be supportive of her hard work, always remember that she derives the same enjoyment and satisfaction from her quilting as we do from our car hobby, plus its just plain cool.
Matt