>I don't even enable cruise control because taking the accelerator input away from me is enough to cause my mind to wander

You're not alone. I find the act of modulating my speed is what keeps me focused on the task of driving safely. Steering alone isn't enough; I can stay in my lane without tracking the vehicles around me or fully comprehending road conditions.

Until a Level 5 autonomous car is ready to drive me point A to point B while I watch a movie I will remain firmly in command of the vehicle.