<p>➀ Tesla, Waymo, and Baidu's Apollo Go are expanding robotaxi services in cities like Austin, Atlanta, and multiple Chinese locations;</p><p>➁ Challenges include safety regulations, fare disputes with traditional taxi drivers, and operational constraints like geofencing and remote safety operators;</p><p>➂ Trials such as GM’s Cruise in San Francisco and Motional in Las Vegas were suspended due to accidents, reflecting safety and scalability issues.</p>