Where are our hydrogen-powered cars?

Wow.
So we'd have to evolve to cope with the water vapour ?
(Mental note to self : - Must find some time to fit in a bit more evolving
this weekend)

What a mind!

(just

 

There you go again, distorting what others say. You're a liar, pure and
simple. See ya.

 

Now I'm not the sort to mock the congenitally retarded, but you really do
need to grow up or shut up.

 

Dear Centre: Remember, you never, ever can win a pissing
contest with a skunk ;-)

 

What is it they say ?

Never argue with a fool.

 

as soon as they got fuelled up, they floated away. D'oh!

 

Hydrogen doesn't have to be fuel for IC engine, can also serve in fuel
cell to run electric motor.
Advantages are that it could therefore bridge while we switch over,
and that it maintains the paradigm of being able to stop and refuel in
a couple of minutes when you run out of fuel, which a lot of the
battery setups won't let you do.

On the other hand, of course, it requires construction of an entire
new infrastructure which would become instantly obsolete when and if
somebody ever discovers a decent battery technology.

 

ah, but: the hydrogen will, in all probability be generated from
water, so it's essentially a closed cycle, rather than generating any
additional water.

 

It's not worthless, it is a decent way of storing a large amount of
energy in a small space. It is not however, the world-saving panacea
that a lot of people seem to think it is.