If airships entered into the aerospace economy, there would be another form of transportation in the U.S. Airships are quiet, they're energy efficient (they are filled with helium), can promote tourism in many of the major cities like New York City, Seattle, Chicago, etc., create a luxurious experiences for passengers, promote advertisements for products and companies, and carry supplies without the scourge of traffic. Airships can come in different sizes (large for transportation, small for tourism, or vice-verse). The largest Zeppelin to date is the Eureka in San Diego. Zeppelins are being used for European tours across that continent, and I think America should do the same.



