Great post, resteeming it! It is a very clever idea to tackle two problems at once and seems to have great potential. I am only worried about the part that some states were having difficulty collecting plastic... the idea should be that only reused/recycled plastic should be used, otherwise more new plastic could be manufactured by the "perfect free-market invisible hand"solely for this purpose and we could see ourselves in serious trouble!
RE: How India Makes Roads from Garbage