Place Jello-O into a medium-sized bowl.
Add the boiling water and stir until the Jell-O is dissolved.
Whisk in the heavy hipping cream, vanilla and 1/3 cup of soda water.
Place the ice into a blender.
Add the Jell-O mixture and puree until smooth. If the mixture is too thick add more club soda, a bit at a time.
Pour into popsicle molds and freeze until set.