Missouri law only requires one party to know about a recording - and allows recording where persons would have no reasonable expectations of privacy.
"The behavior by the driver is clearly wrong, but the companies make it very hard to win damages against them for this", he said.
At several points in the dozens of hours of archived footage, passengers noticed the camera and asked Gargac why he's recording them.
The recordings and suspension highlight pressing questions about consumer privacy and consent.
It is not a crime in Missouri for parties to record their own interactions, unless it shows someone nude without that person's consent. Only 11 states mandate that everyone involved in a recording give their consent for it to be lawful, including California, Florida and IL.
An Uber spokeswomen told CNET: "the troubling behaviour in the videos is not in line with our community guidelines". "The driver's access to the app has been removed while we evaluate his partnership with Uber", it added. However, this doesn't undo the fact that hundreds of female passengers had their information spread without their own knowledge or consent.
Lyft said in a statement to The Washington Post that "the safety and comfort of the Lyft community is our top priority, and we have deactivated this driver".
He also worked for another on-demand transportation company called Lyft.
The driver, Jason Gargac, told the St. Louis Dispatch he doesn't see anything wrong with broadcasting his riders to a web audience. "Sorry. Unless you've got a time machine, that content is unavailable", Twitch tells users on his page.
Gargac said he is just trying to "capture the natural interactions between myself and the passengers".
As the incidents took place in Missouri, no laws have been broken.
The incident is stirring up debate over video cameras inside ride-hailing auto services. Recordings can document evidence for accident and insurance claims. If you are present in the conversation, as the driver was, it's legal to record and live stream.
Gargac reportedly streamed most of his more than 700 rides, with customers reportedly including children, college students, and public figures including a local TV news reporter and the Alice in Chains lead guitarist Jerry Cantrell.