<ul data-eligibleForWebStory="true">Tesla launched its robotaxi service in Austin on Sunday as an invite-only service initially.The company's stocks rose 1.9% in premarket trading on Monday post the robotaxi launch.CEO Elon Musk has pledged millions of robotaxis by 2026, emphasizing the importance of successful execution.Tesla's stock saw modest gains following the Austin robotaxi launch.The robotaxi service in Austin gives select users access to driverless rides for a flat fee of $4.20.UBS analysts raised Tesla's target price by $25 to $215 but maintained a 'Sell' rating.Musk has touted autonomy as a key driver of Tesla's long-term value, with the robotaxi opportunity likely already factored into the stock price.Musk teased the robotaxi launch, showcasing a driverless Model Y earlier this month.Competitors like Alphabet's Waymo have already demonstrated autonomous taxis in multiple cities.Texas lawmakers aim for stricter regulation of robotaxis, while technical challenges persist.Tesla's stock has faced challenges in 2021, dropping nearly 15% due to declining vehicle sales.Analysts suggest Tesla's cost-effective, scalable manufacturing model could provide a competitive edge.