Well there's your problem right there! You're supposed to brush your teeth with water and baking soda, not power a car with it! For a car, you're supposed to use either
- water and baking powder, or
- vinegar and baking soda
Either way, you're going to need a really big balloon...
Baking powder is just baking soda with cream of tartar added............
Not just brush your teeth...anyone else remember [way back] those little frog-men, submarines, and battleships that you filled with baking soda and watched swimming around the bathtub?