What do u mean by "elevation" challenges? Hills?

In motorsports, when we refer to "elevation changes," we are talking about variations in the track's height or altitude. This means that the track isn't flat; it has sections where the road surface goes uphill or downhill. These elevation changes can significantly impact the dynamics of driving on the track.

For example, uphill sections can slow down cars due to the increase in gradient, requiring more power to maintain speed. Downhill sections can be challenging because they can provide greater speeds, which require careful braking and control to navigate safely.

These elevation changes add complexity and excitement to the track, testing the skills of drivers and providing a unique challenge that flat tracks do not offer. Tracks with significant elevation changes, like Willow Springs' "Big Willow" circuit, require drivers to adapt their driving techniques to tackle the varying terrain effectively.