Thanks all, I feel enlightened and a bit confused.
If ACC (or TACC) is part of EAP, then what is included in the core AP available on the "base", wink-wink, $49000 Model 3? I know it's not base, but it is the starting price point in April 2018. The original responder, the one who confused me with "AAC", said that the core AP is ACC without Autosteer. Was he wrong?
I would say that AP without ACC/TACC is nothing more than last century cruise control and should not be called Autopilot.
If extra $5K (EAP) pays for the four features Tesla lists and TACC, I think it's worth it.
If TACC is included in core AP, then $5K for EAP is harder to justify, but many of you made a decent case.