That is precisely the misconception I was talking about. It's simply not true for modern airliners (outside of a few technical demonstrations). There was a Glob

That is precisely the misconception I was talking about. It's simply not true for modern airliners (outside of a few technical demonstrations). There was a Global businesses jet which had auto-takeoff but that's about the only one I know of in service. The reason it's not used is there are no limits on required takeoff visibility so there is no operational capibilities to be gained by auto-takeoff and you need to be able to see enough to taxi to the runway in any case. CAT-III autoland is a thing but it's actually only used in very limited circumstances, not least because it increases runway safety margins in a way which restricts runway utilisation. Many busy international airfields don't even have a CAT-III certified runway. The aircraft won't automatically cycle through to the correct mode to land (there are a bunch of other steps required to put then autopilot into a double/triple redundant mode etc).