Gees, you are on the ball aren't you... Well, this is a very technical and complicated question...Hydrogen is a tricky one. I like hydrogen and I believe 100% that racing improves the breed. I guess this is why they are considering it. In the real world of course hydrogen in its current form is not feasible, (read economical, at the moment) You,(we) must remember that every time you change energy from one form to another you lose something, ie a % of the energy used to facilitate the change of state. This is why evs will never win until they get the efficiencies high enough to beat the numerous advantages of ice engines. Its not whether not people like evs, its the fact that it costs energy to fill and store power in the batteries and then remove it again to use it. If you are a dreamer and you want to use the sun to charge batteries to store the energy before you remove it again to charge the ev;s cells, there goes another 50%. etc. That is the one step that ice doesn't have. The other of course is that ice is more efficient in the (normal) temperature fluctuations ie 10deg to minus 10degrees, where as evs lose efficiency at a hell of a rate of knots once you get down to 10deg, All the bs and politics aside it really is as simple as that. There are two realistic problems with hydrogen. One is that it is too simple. Let me explain...in my way of looking at it they should be working on being able to separate the hydrogen from the water on demand and simply burn that in an ice engine that would keep the greenies and the auto companies happy. This is of course a bit of a challenge challenge to date with high output cars but although it is possible. Unfortunately this will never happen because it is something that i can do in the backyard. That is the end of that. In fact this has already been done back in 70s, although not quite practical back then either. The problem with the other possibilities eg fuel cells have been the most talked about, is that once again there are too many steps in the various systems eg separate the hydrogen, store it at extremely high pressure, (the the pressure is not an issue of course but the energy required to get it up to pressure is) then you run it through an engine of some sort and then you run a generator (Alternator actually) with it to either store it or to use it or directly to run an electric motor. This way of course it is so complicated that it wont be done in my backyard and the auto companies with still have something to repair. As far as the gp cars are concerned go for it I reckon. Although I did ride a motorcycle in the rain for five weeks to see the last race of the turbos back in 86 I doubt I would do that to see hydrogen cars run....
