Spyker Cars N.V., which recently bought Saab Automobile from General Motors Co., has chosen GMAC Financial Services as the preferred lender for its 500 Saab dealers in North America and globally, Automotive News reported. GMAC's preferred lender agreement with Spyker takes effect immediately and calls for GMAC to supply dealers with inventory financing and retail auto loans. Auto leasing is excluded from the arrangement, though GMAC is considering offering leases in some markets, GMAC spokesman Tony Sapienza said. GMAC already provided retail financing through all the Saab dealers and has provided inventory financing to a majority of them, Sapienza said. The dealers can continue to operate under their existing lending agreements with GMAC, he said. “We've had a long-term relationship with these dealers when they were a part of GM,” Sapienza said. “It's an easy transition.”