 Complete the following phrase:  The car was based on the same design principles pioneered in the F2002 but taken a step further. The periscope exhausts were smaller and mounted closer to the cars centre line, the rear wing was enlarged and the rear suspension redesigned to reduce tyre wear, a major problem in the F2003-GA. The engine was designed to last a full weekend in accordance with the FIAs technical regulations for the season. As a result, the gearbox also had to be redesigned to be more resilient. The rear end aerodynamics were improved and the car featured a shorter wheelbase. Launch control and fully-automatic gearboxes were also banned for , meaning the driver had to start using the paddle-shifters, and find the effective bite point and release the clutch manually, again. These electronic driver aids had been used by the team for the previous three seasons, since the 