“The submarine has blades on each side that are hooked up to a customized gear mechanism and drive belt from a Strida bike”
treehugger.com/files/2010/06 … s.php#ch01
…strange?
“The submarine has blades on each side that are hooked up to a customized gear mechanism and drive belt from a Strida bike”
treehugger.com/files/2010/06 … s.php#ch01
…strange?