I see the point that it is smarter to use Sodium instead of Lithium. But where is the revolution, as the capacity is comparable? Lets see, if the number of recharging cycles will really be twice as large (2000 instead of 1000). That would eat into the revenue, unless the new batteries were sold for a higher price (which in turn would give them trouble to compete against Lithium).

The main revolution is not a technical one, it is the fact that a big market may move from Asia to Europe.

If a capacity increase or a weight decrease could be realised, I'd accept the term 'revolution'.