If Nova has been using an Electrovaya battery in their prototype - - - and I do not know if they have, then they will probably proceed for now.  It will take them a year to redesign.  That brings up an interesting thought.  If the infinity cell is much better than the Proterra cell and they have a cell manufacturing facility, then they could decide to license the cell for manufacture in California.  However,  The Electrovaya manufacuering process is so much different it would require a complete work over of the factory.  That brings up the probability of a joint venture.  So many things and so many directions that we will just have to wait and see what shakes out !