The Zero Now program offers Class 8 CWI near-zero NOx nat gas trucks at the price of a diesel truck (or cheaper) in exchange for a fueling supply deal with CLNE. It is not clear when these 500 trucks were signed up, and if the orders have even been registered by WPRT. If CWI were to increase sales of engines per quarter by 500, it would be a major boost to the bottom line, expanding gross margin per unit as well.