[BizarroLand]

Thats a good questions for a statistician.

# of airships vs # of Airplanes, over various time periods, various safety improvements (hydrogen to helium for airships, plastics instead of steel vs self-flying & landing planes and propellers to jet engines, things like that)

The one thing planes have over airships is speed. The faster airships topped out at 80-90mph at the same time planes were pulling 200mph.

Now planes can be supersonic while I can't really imagine dirigibles going more than 150-200 mph max.