NURBURGRING, Germany - Romain Grosjean may have rescued his Formula 1 career on Sunday by reaching the German GP podium.He hadn't scored a point since his podium in Bahrain so was a subject of rumour that Lotus might be preparing to replace him with Nico Hulkenberg.Indeed, it is believed Hulkenberg has terminated his contract with the financially troubled Sauber; Bild newspaper said he had even had a Lotus seat-fitting.POSITIVE TURNFrenchman Grosjean, 27, however, said he never doubted himself. "Not really," he told RMC on Sunday. "I just asked myself 'When are things going to turn?' I have always believed in myself."The numbers were not good but I knew that the work I was doing was positive."Grosjean denied being upset after Lotus asked him to let team mate Kimi Raikkonen pass for second place on Sunday."As far as the strategies (go)," he said, "we didn't put our eggs in the same basket so I think it was the right thing to do." Stay with Wheels24 for the 2013 F1 season – fresh reports every day.