Uber Technologies announced Thursday a partnership with electric vehicle manufacturer Rivian to develop and deploy autonomous robotaxis, with Uber committing to invest up to $1.25 billion in the venture.

Under the agreement, the companies plan to introduce as many as 50,000 fully autonomous Rivian R2 SUVs to Uber's ride-hailing platform over the coming decades. The vehicles are expected to operate in cities across the United States, Canada, and Europe.

Uber will begin the partnership with an initial $300 million investment at signing, with the remaining investment of up to $950 million contingent on Rivian achieving certain autonomous vehicle development milestones. The total investment period extends through 2031.

The partnership represents a significant expansion of Uber's autonomous vehicle ambitions and provides Rivian with a major customer for its upcoming R2 model. Rivian will be responsible for manufacturing and providing the electric SUVs, while Uber will integrate them into its existing ride-hailing network.

Both companies emphasized that the deployment timeline will depend on regulatory approvals and the successful development of fully autonomous driving capabilities. The deal is still subject to final regulatory and corporate approvals.