Why we don't commute with helicopters

Choppers are now associated mostly with militaries, hospitals, news reporting and other institutional uses. But they were once seriously touted as mass transit vehicles, the original flying car. It all came to an end in 1977, when four passengers were killed in the spectacularly nasty Panam rooftop disaster. Efforts to revive scheduled passenger helicopter service is periodically revived, but everyone's failed at it -- including future president Donald Trump.