Just think.  If the solid state battery is twice as good (energy density) as the current Electrovaya fork lift battery and cost 1/3rd as much, TESLA would be all over it.  I read an article recently that said that solid stste batteries have the potential to be UP to 10 times the energy density of the current lithium battery cells.  Since Electrovaya's EV-44 cell has higher energy density than the rest of the pack that would decrease the difference. 

I was really not trying to think of TESLA as I had Toyota or VolksWagon on my mind for the solid state battery.