The company says no children under 13 can ride -- even with a parent. That's more restrictive than the Model Y SUVs it's using as robotaxis.

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 shares fell Friday after the electric-vehicle maker's much-anticipated Cybercab launch, leaving some Wall Street analysts with more questions than answers. The stock dropped more than 6%, putting it on pace for its worst day since July 23 — when it plunged 15%.

Riders in Austin can now hail the two-seater. The company's own July letter says batteries still set the pace.