Schoolbus quilts
A gal in South Carolina had a school bus and did just what you said. It had to be 15 or so years ago. I just searched on the internet and didn't find her, but it was a good while ago. There are still lots of people who don't use the internet yet but I would think it would be a bog competitor. I can see you parking at quilt guild meetings, quilting retreats and workshops, farmer's markets, etc.Sounds like fun!