Pour cream soda into ice cube trays (you can use as much soda for the ice as you would like, but I would recommend having at least half of the soda unfrozen for the drinks). Freeze the soda until completely frozen; this will take a few hours.

Make the whipped cream topping by mixing the whipping cream and 2 tablespoons of the butterscotch syrup with an electric mixer. Mix on high for a couple of minutes until the topping has reached a thick consistency.

After the topping has been made, pour the remaining soda, ice cubes, and butterscotch syrup into a blender. Mix all of the ingredients together.

Pour into glasses and top with whipped cream topping. Serve immediately.