Getting in and out of a racing car can be tricky.

The steering wheel must be removable unless you are a yoga guru or equivalent.
Hmm… a finesse added means added weight. Let’s add as little as possible.

With a little help from a friend I got hold of this very nice “Snap Off” hub. They don’t come much lighter than this.

The steering wheel axle is actually a tube so, all-in-all, this solution is actually lighter than the original solid one.