my understanding is that it is working. i thought he also said that this dual fuel system could work with diesel also. I agree with you that this works well for large fleets, panel vans and trucks. i just think there are alot of fleets (mid size) that could use the dynovalve standing alone. large construction companies that have 100 to 200 pick ups for example. he may be going after these types of sales already. it would be nice to hear about some purchase orders coming in like that. i am still bullish, just like to throw some thoughts out there