What Is The One Option You Must Have On Any Car You Buy?

Whenever any of us go on an online car configurator to build a car we can't afford, there are options that we always equip. What option is indispensable?

In my case, the option that I always have to tick if it's available are seatbelts in a different color. Basically, if I'm building a Porsche, my seatbelts are always Guards Red. It's just something that I have to have, I don't know why.

What about you, what option is totally required on any car you buy?