By Abhirup Roy SAN FRANCISCO, Sept 4 (Reuters) - Tesla's race to deploy Cybercab robotaxis will put regulatory limits to the test as the EV maker begins paid rides in the sporty, two-seaters that run without a steering wheel,

Tesla's Cybercab has officially hit Austin streets, but federal regulators wasted no time opening an investigation into how the driverless EV was certified.

Elon Musk’s electric-vehicle company will hold a launch event for the Cybercab autonomous vehicle on Thursday.

Tesla launches its purpose-built Cybercab in Austin, Texas but its one million robotaxi miles look tiny next to Waymo.

The company published a form on its website Thursday soliciting info from people who are interested in "Cybercab fleet vehicle purchasing."

Now 45 of the vehicles, which do not have steering wheels or pedals, are registered to operate on Tesla’s robotaxi network in Texas. On Thursday night, after the news embargo lifted, the online influencers who attended the event began to post sanguine reviews and clips from their first Cybercab rides.