Before winter testing got underway in Jerez at the start of the week, few would have anticipated that Caterham would be RenaultSportF1's effective works outfit.That honour should have gone to Red Bull, the four-time champions who have been running Renault power since 2007. But Red Bull's Jerez difficulties have been well-documented, and it was the Leafield racers who proved to be Renault's most reliable customers over the course of four days of racing, thanks in no small part to the 54 laps logged by Kamui Kobayashi on Friday.But Caterham and Red Bull have – unsurprisingly – gone for a tortoise and hare approach, and there is no denying that slow and steady has won this week's...
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