CNBC went to Austin, Texas, to check out the supervised, invitation-only launch of no more than 20 of Tesla‘s robotaxis. CEO Elon Musk once promised Tesla would be able to drive themselves and owners would be able to rent out their vehicles for rideshare.

The three autonomous driving experts told Business Insider about how they think the launch went, and what may have prompted some issue.

Since Tesla's recent launch of its robotaxi service in Austin, videos have emerged showing driving problems including speeding, sudden braking and driving over a curb.

Tesla’s robotaxi push faces safety flaws, legal risks, and issues in Austin, casting doubt on its autonomy vision. Learn why TSLA stock is a sell.

Terrifying new footage shows a Tesla robotaxi ripping through partially flooded streets in Austin, Texas. The clip, which went viral on the r/SweatyPalms subreddit over the weekend, shows the modified Model Y blasting past far more carefully driving vehicles in the right lane.

Waymo has 69 times more vehicle days of commercial robotaxi operation in Austin and has had 42 more incidents. This is one incident for every 292 vehicle days of operation. Tesla has had zero collisions while Waymo has had three collisions (aka Actual accidents) in Austin.

Alphabet’s Waymo has begun testing its autonomous vehicle technology in Philadelphia, marking its latest step toward expanding robotaxi services nationwide amid intensifying competition with Tesla, which is racing to commercialize its Cybercab platform.

Tesla has begun its first paid Robotaxi service in Austin, Texas, using driverless Model Y vehicles monitored by human safety staff. But questions remain over safety, transparency and regulation