the LaFarge project is for only 2 vehicles it seems, not 1200, that's the model number, but it looks like VLC has commintments for a minium of 600 heavy duty EV vehicles for 2024 and elva i believe is one of their back up suppliers so i imagine they are talking at least.
Proterra to provide battery systems to at least 600 Vicinity Motor Corp. commercial EVs by 2024, including transit buses