There is! Here's what it sounds like: https://www.youtube.com/watch?v=2dgzKW8EKMc https://www.youtube.com/watch?v=2dgzKW8EKMc Hydrogen is more energy-dense th

There is! Here's what it sounds like: https://www.youtube.com/watch?v=2dgzKW8EKMc https://www.youtube.com/watch?v=2dgzKW8EKMc Hydrogen is more energy-dense than gasoline, but it's much more of a pain in the ass. Gasoline is far denser than air but hydrogen is far less dense, so normal injection displaces a ton (30%) of oxygen from the cylinders. You need to use direct injection to get any kind of power out of hydrogen, and a very high-flow fuel pump. Combustion is also much hotter than normal, so you produce a ton of NOx compounds; that's why there's a huge catalytic converter on the back of the Toyota. Without the efficiency of a fuel cell there's quite a lot of loss of range. The potential for increased power+lower weight in high performance vehicles could do a lot to combat the halo effect of gasoline... or at least I hope so.