Federal traffic safety regulators are looking into suspected problems with Elon Musk's test run of self-driving "robotaxis" in Texas after videos on social media show a few of them braking suddenly or going straight through an intersection from a turning lane and driving down the wrong side of the road.

By Norihiko Shirouzu and Abhirup Roy AUSTIN (Reuters) -After driverless Tesla Model Ys were spotted traversing Austin, Texas streets on Sunday morning, CEO Elon Musk posted on his social platform X that Tesla's "robotaxi launch" would start this afternoon with rides for a flat fee of $4.