They sell those cans at Costco. We bought a 3 pack for $6 as a novelty. It's SUPER easy to make pancakes with them: just heat up a frying pan, then make a circle with the batter. We thought it would be cool for a quick school day breakfast.
The problem is they don't taste very good. They have this bitter lemon-y flavor that just doesn't taste right. Not sure if that flavor is intentional or a side effect of the propellant in the can.