Boil cherry cola in heavy large saucepan over medium-high heat until reduced
to 1 1/2 cups, about 45 minutes.
Stir in next 5 ingredients. Reduce heat to medium and simmer until mixture
is reduced to 2 1/2 cups, stirring occasionally, about 35 minutes.
Transfer glaze to large bowl. Position racks in top and bottom thirds of
oven and preheat to 325 degrees F.
Sprinkle ribs with salt and pepper. Wrap each rib rack tightly in aluminum
foil, enclosing completely.
Divide foil packets between 2 rimmed baking sheets. Bake until ribs are
very tender, switching positions of baking sheets halfway through baking, about
2 hours total. Cool ribs slightly in foil. Pour off any fat from foil packets.
Prepare barbecue (medium-low heat).
Cut each rib rack between bones into individual ribs. Set aside 1 cup glaze.
Add ribs to bowl with remaining glaze and toss to coat. Grill ribs until brown
and glazed, turning to prevent burning, about 5 minutes total.