The first Formula 1 test of 2016 showed that this will be a year of evolution rather than extreme solutions.
The track running revealed definitive race bodywork and details that were hidden at launches and, unsurprisingly given F1 is into the third year of this regulations package, all the teams are working on finer details to add performance.
As the season progresses it's these details that will receive further attention. With far-reaching rule changes coming in for 2017, teams will lack resources for dramatic innovations or 'B-spec' cars. It's going to be a season of paying close attention to the details.