May 29 - Tesla (NASDAQ:TSLA) plans to start operating a fleet of 10 to 20 full self-driving Model Y vehicles on Austin's public streets in mid-June, following on-road tests this week without a driver or onboard engineer.

Shares of Uber (NYSE:UBER) and Lyft (NASDAQ:LYFT) declined in Thursday's trading, reflecting investors' caution as competition heats up.

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Uber has been building its own autonomous network through partnerships with Google's Waymo (NASDAQ:GOOG) in Austin and Atlanta, Pony AI (NASDAQ:PONY), Momenta and May Mobility, which is set to launch on the Uber platform in Arlington, Texas, by year-end. A separate agreement with WeRide (NASDAQ:WRD) aims to roll out driverless vehicles across 17 U.S. cities over the next five years.

Lyft is also deepening its self-driving ambitions via ties with Mobileye (NASDAQ:MBLY), Marubeni (MARUY) and May Mobility, with trials expected in Atlanta as soon as this summer and a broader launch in Dallas by 2026.

Lyft CEO David Risher says autonomous vehicles may reshape the ride-hailing market over time, and Uber CEO Dara Khosrowshahi predicts they could supplant most human-driven cars by around 2040.

This article first appeared on GuruFocus.