Red Bull's route to preparing for 2016 was fraught with indecision over its power unit.
It is invariably a team that leaves a new car's completion until the last minute anyway, so expect the RB12 to change a great deal over the two weeks of testing.
The car has shown some of its secrets so far, but there is also evidence that Red Bull is holding its final specification back to maximise development time and exploit all possible gains in the windtunnel.
The perfect Formula 1 car from 2016 Mercedes swept all before it again in 2016, but it was not the perfect car - take some bits from rival teams and you'd have quite the potent racer... F1
F1's new development war has already begun The last grand prix weekend before the winter offered teams a great opportunity to get a headstart on work for 2017 F1
F1 teams still pushing with an eye on 2017 The F1 development race hasn't slowed down as much as expected in the final races of the current rules cycle, with teams still pushing to maximise running before the winter break and Mexico-specific solutions on show this weekend too F1
A glimpse at McLaren's 2017 work at Austin? McLaren struggled at Suzuka, but on Friday at Austin it introduced developments to its MP4-31 that could well have next season in mind F1
How Formula E's open title fight was defused in two races It was open season as Formula E returned to action, with the championship contenders all close on points ahead of the six-part Berlin E-Prix. But after just two races, Antonio Felix da Costa's dominance has all but defused the title fight FE
How Red Bull's other 2020 star has made Marko "really happy" Max Verstappen has strongly led the charge for Red Bull so far in Formula 1 2020, mixing it with the mighty Mercedes team on occasion. But another driver on the energy drink giant's books has also been delivering fine performances this season F1
Why the FIA's Racing Point verdict pleases nobody While Racing Point blasted a "bewildering" 15-point penalty and €400k fine, many F1 teams felt it had gotten away lightly with running illegal brake ducts. Rather than providing closure, the FIA's ruling instead presents questions aplenty F1
How a change in priorities is making F1 stronger Strong governance, and a spirit of co-operation engendered by the COVID-19 crisis, has resulted in Formula 1's 'new deal'. PAT SYMONDS explains why it's a change for the better F1
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