The problem with this company is they are charging way too much, they are targeting those countries that really don't care about the pollution.
Best approach for them is have these technology in the market by reducing the costs ($4000~$5000) should not cost $15,000.00, in some of these countries they can buy another bus or truck for that amount.
I understand they spent lot of money in R&D etc, but it should be recovered in times and in volume, by letting the product out and not just yapping about how good it is and what it can do is not going to cut it, people need to feel it and need to see the value thru use and not thru some fancy document or presentation.
I had a position here but got out with small hit, this is heading down the drain.GLTA