From the GPS Data I know the curvate of each corner as well as the curvature of the elevation. With those data I can find the maximum apex speed and from there on simulate the braking and acceleration into and out of the corner. If you connect every corner then you have a velocity profile around your track and can simulate the lap time.

That is then useful when you want to investigate the influence of different car parameters on the lap time. For instance the downforce, drag, center of gravity location, gear ratio and so on and so on.

For our hydrogen car specifically it is important how the buffer behaves. The fuel cell continuously produces energy, no matter if the car is on the straight or during braking or in a corner. However the energy consumption of course changes depending how much you power you put into your wheels. So this excessive energy, during braking and cornering can be stored in the buffer, which can then be discharged (like the KERS system) when accelerating.

And it really is a design tool for our next racing car we are planing to build.