It's always been the case that F1 drivers will drive to the maximum speed that the package allows. What stops a car from going faster during a race (or a lap) is usually limited by one particular aspect of the package. In the ground effect era, it was engine power; in the V10 traction control era, it was aero downforce; and most recently it has been about tyre longevity.
I predict that with the new 2014 regulations, tyres will no longer be the limiting factor, instead it will be fuel consumption. So instead of seeing drivers and fans complaining they are not able to attack due to having to conserve tyres, we will hear the same thing about fuel conservation.
A heavier driver will be even more penalised and the major area of development will be in weight saving. We will see even more extreme cases of fuel conservation, such as drivers being told to stop immediately after the finish line in the slow down lap and slower coasting during the parade lap and under the safety car (perhaps running purely under electric power).
