Stellantis, Wayve, and Uber have entered a partnership to jointly explore the development and deployment of Level 4 driverless robotaxis at a global scale. The collaboration brings together Stellantis' L4-Ready Platforms, Wayve's AI driving technology, and Uber's global marketplace to power a new generation of fully autonomous vehicles. This strategic relationship builds on the companies' existing collaborations, including Stellantis and Wayve's recent L2++ agreement, and Wayve and Uber's partnership to deploy autonomous rides in London, Tokyo, and ten other cities starting this year.

The initiative intends to combine three complementary strengths needed to commercialize autonomy: vehicles, technology, and platform. Stellantis will design, engineer, and manufacture vehicles built on advanced L4-Ready Platforms with embedded sensor suites and the safety and redundancy required for high-utilization driverless operations. Wayve will provide the AI driving software that enables vehicles to navigate complex real-world environments autonomously, using an end-to-end AI approach that adapts across regions without city-by-city mapping. Uber will deploy these autonomous vehicles on its global mobility network, connecting riders to autonomous trips through the Uber app.

Collaboration Roles

The companies plan to work together on vehicle integration, testing, validation, and deployment with the goal of bringing safe, reliable, and scalable autonomous mobility services to cities across Europe, North America, and beyond. The partnership represents a significant step toward commercial robotaxi services at scale and reinforces the ecosystem approach needed to democratize AV technology.

Strategic Framework

The non-binding Memorandum of Understanding (MoU) establishes the framework for future agreements covering technology development, licensing, production, and vehicle procurement. Each company retains the flexibility to pursue additional collaborations in the autonomous driving space.

"This collaboration brings us closer to delivering a smarter, safer and more efficient mobility for our customers," said Ned Curic, Chief Engineering and Technology Officer at Stellantis. "By combining our L4-Ready Platforms, designed from the ground up for safe and efficient driverless operation, with Wayve's adaptive AI and Uber's global network, we are accelerating the deployment of autonomous vehicles that meet real customer needs."

"This partnership brings together three leaders, each with our own strengths: Stellantis' vehicle expertise, Uber's global mobility platform and Wayve's embodied AI," said Kaity Fischer, Wayve's VP of Commercial & Operations. "This is just another strong signal that the industry is converging around Wayve's technology as the way to scale AVs globally."

"Successfully scaling autonomous mobility means bringing together the right vehicles, technology, and platform in a seamless way," said Sarfraz Maredia, Global Head of Autonomous Mobility & Delivery at Uber. "Together with Stellantis and Wayve, we're excited to bring safe, reliable autonomy to more riders around the world."

Stellantis and Factorial Inc. have integrated Factorial's advanced FEST® (Factorial Electrolyte System Technology) solid-state battery cells into a Dodge Charger Daytona development vehicle and launched a road-testing program to validate performance, safety, and reliability. This milestone marks the first automotive integration of solid-state battery cells in North America and represents a breakthrough step toward automotive-grade application. The collaboration aims to deliver longer range, faster charging, and lower costs for future vehicles.

The integration utilizes a patented mechanical architecture designed by Stellantis to accommodate the solid-state cells within the existing battery pack. Engineers adapted control systems and pack designs to optimize cell performance while meeting rigorous automotive requirements for safety and durability. The testing program will help tune and verify pack performance under charging and driving conditions.

"Battery development is a balancing act. It's not enough to optimize a single metric. We need a system that delivers real benefits in a real vehicle," said Ned Curic, Stellantis Chief Engineering and Technology Officer. "This milestone shows we are bringing solid-state batteries closer to our customers with the potential for longer range, faster charging and lower costs. Just as important, FEST®'s strong compatibility with lithium-ion manufacturing processes gives us a critical path to scale this technology."

In 2025, Stellantis and Factorial demonstrated FEST® cells with an energy density of 375 Wh/kg. The cells achieved ultra-fast charging from 15% to 90% in 18 minutes and maintained robust reliability across temperatures ranging from -30 °C to 45 °C.

Key Battery Specifications

"We are deeply honored to work alongside Stellantis, one of the world's great mass-market automakers, on this STLA Large-based development car," said Siyu Huang, CEO of Factorial. "What we have built together, from cell chemistry to pack architecture to enable real-world road testing, is exactly the kind of deep, full-stack collaboration that solid-state has always required."

This milestone marks continued progress on a previously announced multi-stage demonstration program. It serves as an important step in Factorial's ongoing development, calibration, and industrialization of solid-state batteries for automotive use.