I'm not a fan of hiding features until they're needed. Let's see, if the WP team designed a car...

The rearview mirror appears only when there is a car behind you. If the transmission is in "park," the options for "drive" and "reverse" don't appear until you start moving the gearshift. Only when you approach an intersection does the turn signal lever appear.

And the power button for the radio is available only when (if?) something good is on the air.

How would you explain all of this to a new driver?