Prolly somptin like that... but i remember it seemin Huge in porportion to the giant puffy clouds (more than the gif dipicts) an i was terrified an me an 2 older sisters ran screamin into the house after we all looked in that direction... they was the first in the house (nether 1 grabbed my hand to insure my safety... lol) an i was last.!!!
"The Hindenburg disaster in 1937, along with political and economic issues, hastened the demise of the Zeppelins."===http://en.wikipedia.org/wiki/Zeppelin
Ah.. Hitler and Germany suffering from trade embargo's pretty much did that. If they could of bought Helium from the American's, the Hindenburg might not of happened. After that event it pretty much undermined Airships in general. In recent years though there has been interest in making them come back since pollution from air traffic is a major concern, it's just suggested not to use Hydrogen for lift. (From Memory the US government has a "blimp" it uses for watching the Mexican border.)
On the initial thread topic, I apologise in advance this isn't a serious consideration but it makes me smile. [video=youtube;jXXltTsQawY]http://www.youtube.com/watch?v=jXXltTsQawY[/video]
The oldest sister pointed... we looked... next sister screamed... me an oldest sister joined the screamin as we all ran for the house... so i only saw it for about 2 + seconds... an except for the vertical row of "dots" it was gray an smooth lookin... but it moved at about the same constant speed of the object in you'r video.!!!