Tesla launched its robotaxi service in Austin on Sunday as its Model Y vehicles drove around a select batch of riders who gave rave reviews about smooth, convenient rides that were available for the cheap price of $4.

A first public test of robotaxis by Tesla in Austin, Texas led to multiple traffic problems and driving issues, videos from company-selected riders showed over the first few days.Chief Executive Elon Musk has tied Tesla's financial future to self-driving technology,

Tesla began its robotaxi service in Austin, Texas, to a select group of invitees. The company says there are about 20 cars available that will cover a four mile radius. NBC News' Gadi Schwartz has more on the rollout.