Linda, No one knows they're
Linda,
No one knows they're in a scam till it is too late. Also, your engine has done nothing for your dear earth but allow a few people to travel all over it in smog producing aircraft. Simulations don't, and never will save the earth.
Try to post a question on their website at the air hybrid blog and see if they post it. Call SWRI and see what they tell you, and most of all go through the archives of the Scud site. It's filled with illusory claims and misleadings.
I am not an investor and never will be. But I have friends that have fallen into this trap and all of them are starting to see the writing on the wall. This is going nowhere.