Ride-hailing giant Uber announced Thursday it will acquire $300 million worth of shares in US electric vehicle maker Lucid Motors as part of an ambitious plan to build its own fleet of robotaxis. The emerging autonomous taxi market is gaining momentum,

The partnership will combine Uber's ride-sharing platform with Lucid's new electric SUV, the Gravity, and Nuro's autonomous driving technology. It'll be launching first in an unnamed "major US city," but is expected to roll out globally to more than 20,000 Lucid vehicles over the next six years.