i knew hidragen has no hidrocarbons, if i remember correctly hydrogen consists of one electron, one proton, Hydrogen is a single element all buy itself, unlike gasoline which is a mixture of different atoms.
diesel burns cleaner than gasoline, a lot of that black smoke is just soot which falls back to earth, unlike hydrocarbons which fill the earths atmosphere. its cleaner burning, and Biodiesel burns even cleaner beacuse of fewer hydrocarbons since it is not a petroleum based product, its inconvenience of jelling up when its cold however is a issue that cannot be ignored, however it can be remedied buy heating the fuel tank, or adding additives.
yes hidrogen is lighter, much lighter, however making your vehicle lighter does not translate to more horsepower and torque it just translates to a better torque to weight ratio, and horsepower to weight ratio... which in the end yes means a more efficient vehicle anyhow.
and what about range? i remember seeing this vehicle that needed to travel long distances, cant remember how far, but it was far enough that a ordinary vehicle needed only to fill up once or so. the vehicle had several welder sized tanks, and i mean oxygen tanks or larger, full of hydrogen in the back of the truck bed just to go far enough, i think the weight from the tanks adds up there, i think five or six tanks where present. i think a hydrogen car would work just fine in Europe, or in other smaller countries, but larger countries like the United States i could see some issues, where some people drive for hours every single day to go to work, but that kind of beats your fuel jelling up if it does not have antifreeze additives or if it is not heated
in addition, im aware of the fact when you charge a car battery, Hydrogen is created, very aware, this is why you connect ground last, to prevent spark from occurring anywhere near the charging battery. i think we had a battery explode once.. that was before i was in the class, i was reminded of that very frequently, in both classes, in my heartlands Diesel class, and my MCTI auto class, it was reviewed heavily, it was also in both tests a question you had to answer correctly. and in both saftey tests in Hearleands, and MCTI i passed the final tests with 100% scores, so yea i am very aware of my saftey.
i understand Biodiesel has its downsides, but so does Hydrogen, it is not perfect, it has its limitations.