Formula 1's aerodynamic regulations for 2014 are far simpler than the powertrain rules, but are inciting just as much controversy.
A few simple dimensional changes are all that have been regulated: a lower nose, a narrower front wing and a single exhaust pipe.
But, at a stroke, these few adjustments have completely changed the flow structure around the car and have set the designers a huge challenge to regain the lost downforce.
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
What to look out for in the 2021 WRC As the 2021 World Rally Championship prepares to launch amid tight COVID-19 restrictions in Monte Carlo, here are the eight things unrelated to the pandemic that you should keep an eye on this year WRC
The one certainty over F1's uncertain 2021 calendar Formula 1 has firmed up its 2021 calendar but, like last year, it is uncertain if there are further cancellations in the pipeline. Largely, it's at the mercy of worldwide COVID-19 vaccine progression - but, unlike 2020, F1 should at least be guaranteed a full season F1
Evans on the talking points of WRC 2021 He came close to the title last year, and now Toyota's Elfyn Evans gives his verdict on what to expect from 2021 as the World Rally Championship prepares to reconvene for the Monte Carlo season opener WRC
The enigmatic legacy of a misunderstood Indy stalwart Flashes of brilliance amid spells of obscurity have been too common for Marco Andretti. While the third-generation racer has opted to bring his full-time IndyCar career to a close, his peaks and troughs have never been for want of trying IndyCar
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