Although I've never used Tesla's FSD on a cross country trip I've used it quite a bit on road trips within Minnesota and around town. I'd say it's ready for full unsupervised driving at this point—the government just needs to approve it and legalize autonomous driving. The current version will literally take you from your driveway or garage to parking spots wherever you're going and back without you ever having to touch the wheel or pedals. I can't wait until the US approves it. I'll probably get my 83 year old Mom a used Tesla so she can regain some of her independence. Her neuropathy forced her to stop driving last year. If you can find a used Tesla with Full Self Driving already paid for and included on the car and with the latest cameras/computer (Hardware 4) it's like a goldmine. Otherwise FSD is $99/month to subscribe and will probably increase in price from there. I'll definitely keep you posted how this goes. Our first driving day is nine hours so I'll be relying heavily on FSD that day.