Mike, there are a lot of engineers who have worked with Lewis to help him get to the best way to use the car to get the best laptime. The engineers have a lot of tools available to them including a very effective simulator (my department developed this and other optimisation tools). This means that the race engineer + controls engineers + strategists can work with any driver to get the best out of the package. This process has worked very effectively with Lewis over the Winter and during the latter stages of last season.