This is the most stupid thing I have ever listened to (it's not really hydrogen or helium, it's fucking in between)
If you've ever seen anything about the GEET engine bs, you'll notice that every explanation is different, and none has scientific standing.
Plus the 'design' has never been released or proves, and the cars they've made don't get the promised mileage. Also the patent they have is simply for the idea of an efficient engine with fuel and exhaust traveling in one pipe in opposite directions with great mileage. This patent is not paired with a working model.









