The first race of the Formula 1 season usually reveals all the clever little aero innovations that people wanted to hide during testing, but Melbourne's rain prevented teams risking new prototype parts in case the car crashed.
We didn't see a lot of the real new stuff, but the open pitlane means that the team can't hide their cars' mechanical underpinnings, so we were still able to seek out lots of 2016 secrets that were previously kept under wraps.
Mercedes