So today I tested what I think others are writing about; "LTA and using signal to change lanes and the LTA shuts down".
This definitely did not happen on mine. I used the signal changed lanes, never touched the gas pedal, and the car continued to follow the lanes once in the new lane. At least I think this is what some are describing. Not sure why some react differently. Must be a setting.
Also after reading post above mine here - I can attest to using LTA many many times and over many hours in speeds of 65-70mph and certainly using for eating something, looking for music, emails, etc etc. I did so as cautiously as I could - eyes scanning, would place hands on wheel if I was passing a car or one approached me, and on curves, but mostly let the car drive itself for the 20 second period before I was given the orange dash notice,. and I can say it works flawlessly. I have learned where it shows its weaknesses. That is on roads where the dividing lines are faint or disappear for short spans, approaching turn-offs on right lane where you are "fed" into the right turn-off, road construction areas, and probably ice though I have not tried on ice and my common sense tells me bad idea. Bottom line I think if you approach with common sense the LTA is an awesome tool.