Not a dirigible but kinda doesn't need to be: http://www.skytran.com/skytran/ I've been keeping an eye on this team for years now.
Understood, SkyTran deals with that by sticking to transport of one or two people. Dirigibles a good idea to scale up.
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Understood, SkyTran deals with that by sticking to transport of one or two people. Dirigibles a good idea to scale up.