Apple Inc (AAPL.O) is leasing a small fleet of cars from rental company Hertz Global Holdings Inc (HTZ.N) to test self-driving technology, Bloomberg reported on Monday.

Hertz shares were up 13.5 per cent at US$10.82, while shares of Apple were slightly down.

Apple is renting Lexus RX450h sport-utility vehicles from Hertz's Donlen fleet-management unit, according to the Bloomberg report, citing documents released recently by the California Department of Motor Vehicles.    

The iPhone maker is concentrating on technology for self-driving cars, Chief Executive Tim Cook said earlier this month in an interview with Bloomberg.

Hertz and Apple were not immediately available for comment.

Alphabet Inc's self-driving car unit Waymo announced a similar partnership with Avis Budget Group Inc, earlier on Monday, to offer fleet support and maintenance services for its fleet of autonomous vehicles.