Fisker is fixing some customers' cars with parts from its vehicle "graveyard," sources say.FREDERIC J. BROWNFisker employees are using parts from preproduction vehicles and inventory to fix some customers' cars, eight sources said.The practice has been ongoing since Fisker began deliveries in June 2023, some sources say.Experts say the practice can be acceptable to avoid long wait times, but customers should be informed of part swaps.Fisker employees have been taking parts off preproduction vehicles and existing inventory to fix some customers' cars, several people familiar with the issue told Business Insider.In response to a backlog of customer-service requests and a shortage of available parts, Fisker technicians have stripped parts off what some have called "donor cars," which include Fisker Ocean preproduction and production vehicles that are sitting in the company's facility in La Palma, California, three current and five former Fisker employees said.