It is a political problem... BUT Subways are expensive to build, and expensive to maintain. If a technological solution makes implementing public transportatio

It is a political problem... BUT Subways are expensive to build, and expensive to maintain. If a technological solution makes implementing public transportation cheaper, I think that's a good thing Edit: Also, Subways work well in dense city areas, but are less efficient is places like LA (outside of downtown) that are very spread out