[darkteflon]

What happens to people who paid for it as part of the sticker price? Are they grandfathered permanently?

[graemep]

It sounds as though they are from the wording, but who knows what a future update may bring?

[amlib]

Ad supported self-driving mode for the grandfathered in customers, of course.

[olyjohn]

Doesn't matter, they'll be buying new cars before they get full self driving.

[spwa4]

Buying consists of paying and receiving a good or service.

Clearly they'll be doing half of buying, and not the other half.