In 2007, a few truly new solutions were developed. But the convergence of other design ideas made most cars fundamentally the same, with the widespread adoption of zero keels, seamless-shift gearboxes and pod wings.
Some of the new rules changes challenged the teams, particularly the single tyre supply and engine freeze, leading the teams to rework their cars' layouts to suit the new tyres, and correspondingly, forcing the aerodynamics teams to match the cars' new weight distributions.
Monocoque, Fuel tank, engine and gearbox length combine to decide the car's weight distribution © Scarborough (Click to enlarge)
As the most far-reaching change, the new single tyre supply affected the season more than any other regulation change.