After hardly driving for a good portion of a decade, then regularly driving again, the highway seemed pretty weird. As in, how are these people spending so much mental energy? Then after a week or two staying exactly where I wanted to be in the lane, and basics like knowing where empty spots in traffic were around me in case I needed to move to avoid something became second nature again, not requiring much conscious effort.

Driving still seems like a waste of time, so self-driving cars make a lot of sense, but I agree that there really must be risk of people's skills during the routine practice of things eroding, such that they might be increasingly worthless or dangerous in emergency situations.