Since Proterra is supplying batteries for the VMC Bus (or was) the volume is not all that great.  VMC busses are still in ramp up stage.  Read their presentation off their web page.  Just a guess here is (the slow ramp up is due to battery problems that led to warranty claims to Proterra helping the  chapter 11 along).  WAG! !  Anyway Electrovaya has a much better battery and Mississuagua is scaling up production.  The new semi-automated hi voltage battery module production line will help out in this reguard.  By the time Mississuagua is ramped up, Jamestown will be starting the battery pack building.  This will increase production and provide US customers with an assembled in the US battery.

All of this should make Mondays earnings call very interesting.  I don't believe in conicidences.  That said VMC is also having an earnings call Monday evening.