San Francisco is likely to prove a more challenging area for Tesla’s self-driving systems. The city is significantly more densely populated and has more challenging roads, largely due to its extreme topography and steep streets.

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.

Tesla is expanding its initial small Robotaxi offering in Austin, Texas, and planning to introduce Robotaxi services in California and Arizona. The company

In Austin, Tesla currently operates its robotaxi service using modified Model Y vehicles, charging riders a flat $4.20 per trip. The service is available to a small group of pre-selected passengers and operates only in clear weather conditions.

According to DirtyTesla, the scrape resulted in little more than a tire nudge, and the onboard safety operator—present in every Tesla robotaxi during the pilot phase—soon took over the wheel to safely drive the car away. No one was injured, and the parked vehicle appeared to suffer no significant damage.

Viral videos have shown several incidents of Tesla robotaxis making errors - or even violating traffic laws - in the wake of their rollout on June 22 in Austin, Texas. NBC News reported these include a Tesla dropping off a passenger in the middle of an intersection and one driving on the wrong side