I would think fully electric buses on dedicated roadways would be cheaper and more flexible in the end. Automated driving is coming closer and the best uses are

I would think fully electric buses on dedicated roadways would be cheaper and more flexible in the end. Automated driving is coming closer and the best uses are for those which travel well marked and maintained routes, hence long distance trucking, buses, and the like. It certainly would be cheaper than building any type of elevated rail system. However with most transportation projects rail has way to much allure even when its financially stupid. Just look at the costs of some light rail projects in our cities and it never makes sense.