The New Indian went bankrupt years ago, but its designs and the name were acquired by another group and they're building bikes again as Indian Motorcycle (not Indian Motocycle). Polaris, who make the very nice Victory brand of Harley-type bikes, bought Indian Motorcycle this year.
The Excelsior-Henderson debacle was so sad...people with grand plans reviving a name almost no one remembers, and lacking the ability to make it happen. In contrast, Polaris started Victory from nothing but had the business experience and production knowledge to succeed.
I like your plans, especially the inner tube and sail!