If you added up all the R&D money spent on these self-driving features, we probably could have already covered 80% of American roads with simple guidance system

If you added up all the R&D money spent on these self-driving features, we probably could have already covered 80% of American roads with simple guidance systems that would assist in piloting cars safely. Then nav systems wouldn't need to be as complex, and wouldn't depend so much on trying to guess road factors. If self-driving really is the future, the government's going to need to be involved, the way it is in building and maintaining roads. Many roads already have cameras and sensors built into them just for measuring traffic, so it's not a big leap to say it should also have tech to improve automated driving.