If anyone is downvoting because they think this is wrong (vs just being low content and largely unhelpful) I’m interested in what alternative explanations exist

If anyone is downvoting because they think this is wrong (vs just being low content and largely unhelpful) I’m interested in what alternative explanations exist. This tech has existed for many years in motor vehicles and works reasonably well in far more complex environments than literal rails. It doesn’t seem at all like a challenging technology problem. The things that come to mind are: failures of politicians to enact requirements, negligent or greedy rail infrastructure and/or train ownership, and unions afraid of lost jobs.