A reporter from Sweden's Automobil was returning a Saab 9-5 to the factory in Trollhatten when he stopped at a gas station to fill the tank. And what there did he spy with his little eye? A 9-3 Sedan being pulled up to the pumps, and in the back of that 9-3 was a trunk full of batteries. When the car was started, he realized that in the front of that 9-3 was a diesel engine. This has all led to speculation that Saab has picked up its previous work on a diesel hybrid engine.