It's becoming more and more popular in Canada, and the paving industry is "lobbying" for it, along with regional governments. It greatly reduces the requirement for raw materials (less oil refining, less aggregate strip mining, less transport of materials, etc), labour costs, and industrial overhead costs of companies.  It's not necessarily best for your average worker, but roads aren't going anywhere any time soon. One big plus is the amount of carbon emissions avoided by simply recycling roads