Gibbs’ amphibious SUV concept “Humdinga” from a couple years back. The military was interested at one time, but I don’t think so anymore. The name ‘Humdinga’ is a clear play off the phrase Humdinger, which a mockery of the Hummer.

http://www.gibbstech.com/humdinga.php
LINK: http://phz.in/1too