> I drive 150+ mile trips all the time. Autopilot is a game changer.

Ha, AP puts me in situations (especially at merge points) I'd never put myself in. It certainly doesn't make the drive less stressful. Quite the opposite. And my wife won't even let me turn on AP now when she and the kids are in the car (this would be most road trips) because it's startling when the car brakes suddenly for an overpass.