I'm just trying to show people our stuff and hope that they will think it's cool,
When you use words like "product", "buyer" and "for sale in jan 09" it conveys more than just some show and tell. Go talk to whoever is coaching you on this airsoft lemonade stand and have them review your marketing techniques. If you want a real review of your products, loan them to one of the vets here and have them review the "product" in a game.
You seem to have a paintball-ish warped sense of what airsoft is. There are very few airsoft "tanks", and none that I know of in Arizona. I have one of the few vehicles dedicated for airsoft use in arizona. It is much more cost effective to have an AEG (m249 in my case) dedicated to the vehicle then to pour thousands of rounds down range in a strafer, and when you need to move away form the vehicle you can detach the gun and it is still a gun and not useless. Also game organizers also have a much easier time making sure your gun is shooting within a legal fps.
I am not trying to "flame you", but to bring you down to the reality of the actual functionality of your wares given the perspective of airsoft veterans like myself. I will say this though, the more you resist the feedback we give you on this forum the less inclined people are to take you seriously.