Sebastian Vettel believes Lotus will be Red Bull's biggest threat at this weekend's Abu Dhabi GP as he looks for his seventh win on the trot.
The German has been in fine form on his way to a fourth Drivers' Championship title, which he wrapped up last Sunday in India.
But despite winning the crown, Vettel insists he won't take his foot off the gas as he chases his seventh consecutive victory this weekend.
Setting the pace in Friday's practice at the Yas Marina circuit, he clocked a 1:41.335 to edge team-mate Mark Webber by 0.155s.
The timesheets, though, didn't tell the entire story as a brake disc issue meant Romain Grosjean, who was quickest in FP1, did not set a time on the soft tyres....
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