A new kind of fuel might not be fuel per se, it might have a similar function with fuel.
Like the use of electricity to function in the place of fuel.
We have cars that run without fuel, we now have electric cars.
I would say this is a new kind of fuel.
There are others that are now a replacement to fuel, I don't have all the examples now.
The diversity is interesting because you have options to choose from.
Being stuck with one choice is no choice at all, your choice has been streamlined.
A new kind of fuel is a real game changer.
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