An interesting bit of gossip reaches our desk, suggesting that Fiat might be in the running to begin supply of a diesel engine to Ford in the US. Could this be a replacement of the ill-tempered Navistar deal? Fiat-powered Super Duty anyone? And what does this say about the mooted interest in Navistar on the part of Iveco? Or that in Cummins on the part of Fiat Powertrain? One thing for sure, it bumps the Fiat Powertrain business yet further towards centre stage.Odd really. Having just got used to losing the Iveco-Ford thing in the UK, we could now be resurrecting something similar in the US.