Heavily shorted shares of rental-car company Hertz are soaring in premarket trading after the company announced a partnership with Uber Technologies to scale both autonomous robotaxi and driver-led rideshare operations.

Hertz's Oro Mobility unit will be used as a fleet-management system for Uber's next-generation mobility network of autonomous robotaxis. This means Oro will support the critical operating layer: charging, maintenance, repairs, cleaning, depot staffing, and vehicle logistics.

"Through its partnerships with Uber, Oro will deliver scalable operational and maintenance services across both autonomous and driver-led operations in key U.S. markets, reflecting the breadth of the companies' collaboration across multiple mobility models," Hertz wrote in a press release