I made a Corvette themed quilt to be auctioned off following our Corvette Club's car show, and it was well received. This is a charity auction, and last year I made a small quilt that brought $240. This year, because my fabric had large cars, the quilt was much larger. The event isn't until the end of Sept., so I can't tell you what it will bring.
But, I used the Warm Wishes pattern and the club members all loved it. Let me find a picture and see if it will work for thinking ideas for you.