Mr.Bergeron,

The concept is not new. Leonardo Da Vinci thought of a similar idea. Please refer to the link below.

http://www.museoscienza.org/english/leonardo/

Like all conceptualization, what is envisioned and what can be worked out practically given technology and monetary limitations are mutually exclusive realities.

Enjoy!

Respectfully,

Gerald D. Hodge, Jr.
War Between the States Historian
Historian: 39th Georgia Volunteer Infantry Regiment
http://39thgavolinfrgt.homestead.com/39thHomepage.html