You need to read the history of lighter then air ships. The world abandoned airships for a reason, they were impractical. To be able to carry 100 passengers your talking about a ship that is extremely hard to manuver, with the winds coming off the ocean the problem only gets worse. Too hard to manuver, too expensive, too dangerous. Helium just doesn’t have much lifting capacity, so your forced to make large air cells which result in something that is extremely hard to manuver.
I’m not some artist, I’m a scientist. And I’m telling you, as cool as airships are they just wouldn’t work for what your proposing. They MIGHT work as super-heavy lifters for carrying special cargo around the world, but being used to allieviate rush hour traffic? No way. Have you seen how the goodair blimp lands? I have, up close. It takes about 20 people with ropes to pull it down. Are you going to have 20 people with ropes waiting at each depot?
Theres a german blimp company that you might want to contact, they are making spheroid blimps for sight seeing. I don’t have the name off-hand, but google should find them.
My 2 cents on the traffic problem? They probably need to bite the bullet and build a subway, just like almost every other metropolitan city.
If you wanted another idea to persue, look into the moving sidewalks the french have. They have several different moving sidewalks, each at a different speed. You walk on the first one, 5mph, then the next 10 mph, then 15mph, etc. Its a great way to move alot of people very fast(25 mph). I’d say build giant parking complexes around the city, highspeed rail(above or below ground) taking the commuters to downtown where a network of moving sidewalks are build just below the surface. Rather then tunnel to build a subway beneath the city, just dig 15 feet, and have a network of the super-fast moving sidewalks to get around downtown.
But the blimp idea? If you don’t believe me its impractical, please go check out why they were abandoned in the first place.
always good to talk to people.