The cost to benefit looks way better if you think long term. Especially with climate change on the horizon to compete with planes but emission free.
One of the major problems for upgrading lines is straitening the route, and people fight the emniment domain way harder than they do for roads.
I personally disagree, Bard feels very uninspired, and copilot i associate too mich with flying, and also sounds more competent than it is.
ChatGPT is probably not the best name, but at least it's unique.