The amount of time you have spent on this truck, most companies would have released a model and been well on their way to an improved version.

By saying "the people who need to see it already have" you don't have to provide any actual proof that anyone has seen it. You are building a forklift, not the next stealth fighter jet. Your product is not a national, or even industry secret. Especially since you have been blabbing about it on forums for more than 6 years.

Your pure lack of proof this thing even exists, and on going trolling of this forum leads us all to believe one of 3 things:

#1 - It doesn't work the way you claim it does; and/or you cannot get proper regulatory approval to sell it. (Which is most likely why you only want to rent it in the UAE)

#2 - You can't get funding for it; and/or the people you have tried to sell it to really aren't interested.

#3 - YOU DON'T HAVE A TRUCK!

You will try and prove me wrong by making a bunch of vague statements that you cannot back up, again. In the end, you words are nothing more than that, just words. Time to put up or shut up.