30 minutes? After driving for a couple of hours, I'm ready to take a 30 minute break and stretch my legs...
Hydrogen? Seriously? 45 years ago, when I was little, they were saying Hydrogen was only 30 years away, and would roll out demo cars to prove it. I think they just said the same thing last week.
I used to think the same thing, until I actually looked at the engineering realities regarding hydrogen. It's the lightest and smallest element on the Periodic Table, so it will migrate through steel, making it brittle as it goes. The only way to make hydrogen in the industrial quantities needed is with steam reforming of petroleum based hydrocarbons (check Wikipedia if you don't believe me). Then there is the energy density and storage nightmare of hydrogen which isn't even nearly as good as current gen car batteries.
And that is just to replace the current fuel in an internal combustion engine (not so efficient) with a lower density fuel (even worse efficiency). Now a fuel cell, where the fuel is converted directly into electricity is promising, except that to produce the amount of power needed to drive a vehicle would require an oxidation rate right up there with a controlled explosion trying to go uncontrolled.
And you still haven't gotten away from using petroleum, or the wars,corruption and crime involved in dealing with it. So, hydrogen isn't really looking too good now, is it?
I would think that just changing the power generation method for a hybrid from an IC engine to a micro-turbine generator, with it's higher efficiency, flex fuel capability, fewer and more reliable parts, would provide the fast recharge capability that you say you want. In fact, some companies are starting to do this already. Neil Young's LincVolt was such a conversion, by H Line Conversions in Wichita, KS.
But I think that, except for niche applications, the end of life for the internal combustion engine is in sight. It has to be over-sized and over-built for performance use, and can't compare (favorably) to microturbines for power generation. They are expensive, complicated, dirty, and require an expensive and violently fought over fuel.