With Polyester in it, it'll last forever. If I had it, I'd use it as a solid piece with bright colored applique on it for a kids' quilt. It should wash well and often and still look good. I'd cover the inside seam edges with some bright colors, possibly for roads with little cars on it. It seems to me to want to be a little boys' quilt, with med colored backing. Maybe to play on the floor with.
FIRST of all, wash it with color catchers.