Basically, Uber is taking many of the things it does for its drivers and couriers - vehicle financing, fleet management tools, regulatory assistance - and making them available for its third-party AV partners, companies like Wayve, WeRide, Nuro, Waabi, and others. It's an acknowledgement that many AV developers aren't as cash rich as Waymo, Tesla, and other leading AV developers, and could use some help defraying many of the costs associated with launching a commercial service.