Thanks for sharing this information, sounds like a neat product.
Does 3D HD Nitro Seal attract dust? Most of the products I have used in the past attracts dust which needs to be dusted off on a daily basis using a duster (like CA King Duster) every day. Yes dust collects even when the car is garaged.
The coupon code TDS you included in your post does not work - has it expired? I tried using it at both 3DProducts and Autopia.