I was thinking about what would a cheap scale demo still be useful for. If you built one out of 2 foot plastic pipe, you might still be able to have a market fo

I was thinking about what would a cheap scale demo still be useful for. If you built one out of 2 foot plastic pipe, you might still be able to have a market for parcel delivery systems and therefore make your money back off the prototype investment before you make a bigger one. Linking some hospitals would be a good starting point maybe.