Tesla (TSLA.US) Robotaxi faces another regulatory challenge: investigation over speeding in school zones, casting a shadow over Cybercab expansion

```htmlGolden Ten Data APP reports that Tesla (TSLA.US)'s Robotaxi business is once again under review by US regulatory agencies. The National Highway Traffic Safety Administration (NHTSA) is evaluating allegations about Tesla's Cybercab and Model Y driverless taxis speeding in school zones. As Tesla accelerates the expansion of its autonomous vehicle fleet, the latest regulatory developments add new uncertainty to the commercialization process of its Robotaxi business.```